Install standardized CI system

.codespellrc

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+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check/.codespellrc
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = ,
+skip = ./.git,./go.mod,./go.sum,./package-lock.json,./poetry.lock,./yarn.lock
+builtin = clear,informal,en-GB_to_en-US
+check-filenames =
+check-hidden =

.ecrc

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+{
+  "Exclude": [
+    "^LICENSE\\.txt$",
+    "^poetry\\.lock$"
+  ]
+}

.editorconfig

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+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/general/.editorconfig
+# See: https://editorconfig.org/
+# The formatting style defined in this file is the official standardized style to be used in all Arduino Tooling
+# projects and should not be modified.
+# Note: indent style for each file type is defined even when it matches the universal config in order to make it clear
+# that this type has an official style.
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{adoc,asc,asciidoc}]
+indent_size = 2
+indent_style = space
+
+[*.{bash,sh}]
+indent_size = 2
+indent_style = space
+
+[*.{c,cc,cp,cpp,cxx,h,hh,hpp,hxx,ii,inl,ino,ixx,pde,tpl,tpp,txx}]
+indent_size = 2
+indent_style = space
+
+[*.{go,mod}]
+indent_style = tab
+
+[*.java]
+indent_size = 2
+indent_style = space
+
+[*.{js,jsx,json,jsonc,json5,ts,tsx}]
+indent_size = 2
+indent_style = space
+
+[*.{md,mdx,mkdn,mdown,markdown}]
+indent_size = unset
+indent_style = space
+
+[*.proto]
+indent_size = 2
+indent_style = space
+
+[*.py]
+indent_size = 4
+indent_style = space
+
+[*.svg]
+indent_size = 2
+indent_style = space
+
+[*.{yaml,yml}]
+indent_size = 2
+indent_style = space
+
+[{.gitconfig,.gitmodules}]
+indent_style = tab

.github/workflows/check-general-formatting-task.yml

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+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-general-formatting-task.md
+name: Check General Formatting
+
+# See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to tools.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set environment variables
+        run: |
+          # See: https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
+          echo "EC_INSTALL_PATH=${{ runner.temp }}/editorconfig-checker" >> "$GITHUB_ENV"
+
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Task
+        uses: arduino/setup-task@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Download latest editorconfig-checker release binary package
+        id: download
+        uses: MrOctopus/[email protected]
+        with:
+          repository: editorconfig-checker/editorconfig-checker
+          excludes: prerelease, draft
+          asset: linux-amd64.tar.gz
+          target: ${{ env.EC_INSTALL_PATH }}
+
+      - name: Install editorconfig-checker
+        run: |
+          cd "${{ env.EC_INSTALL_PATH }}"
+          tar --extract --file="${{ steps.download.outputs.name }}"
+          # Give the binary a standard name
+          mv "${{ env.EC_INSTALL_PATH }}/bin/ec-linux-amd64" "${{ env.EC_INSTALL_PATH }}/bin/ec"
+          # Add installation to PATH:
+          # See: https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#adding-a-system-path
+          echo "${{ env.EC_INSTALL_PATH }}/bin" >> "$GITHUB_PATH"
+
+      - name: Check formatting
+        run: task --silent general:check-formatting

.github/workflows/check-license.yml

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+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-license.md
+name: Check License
+
+env:
+  EXPECTED_LICENSE_FILENAME: LICENSE.txt
+  # SPDX identifier: https://spdx.org/licenses/
+  EXPECTED_LICENSE_TYPE: GPL-3.0
+
+# See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/check-license.ya?ml"
+      # See: https://github.com/licensee/licensee/blob/master/docs/what-we-look-at.md#detecting-the-license-file
+      - "[cC][oO][pP][yY][iI][nN][gG]*"
+      - "[cC][oO][pP][yY][rR][iI][gG][hH][tH]*"
+      - "[lL][iI][cC][eE][nN][cCsS][eE]*"
+      - "[oO][fF][lL]*"
+      - "[pP][aA][tT][eE][nN][tT][sS]*"
+  pull_request:
+    paths:
+      - ".github/workflows/check-license.ya?ml"
+      - "[cC][oO][pP][yY][iI][nN][gG]*"
+      - "[cC][oO][pP][yY][rR][iI][gG][hH][tH]*"
+      - "[lL][iI][cC][eE][nN][cCsS][eE]*"
+      - "[oO][fF][lL]*"
+      - "[pP][aA][tT][eE][nN][tT][sS]*"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  check-license:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ruby # Install latest version
+
+      - name: Install licensee
+        run: gem install licensee
+
+      - name: Check license file
+        run: |
+          EXIT_STATUS=0
+          # See: https://github.com/licensee/licensee
+          LICENSEE_OUTPUT="$(licensee detect --json --confidence=100)"
+
+          DETECTED_LICENSE_FILE="$(echo "$LICENSEE_OUTPUT" | jq .matched_files[0].filename | tr --delete '\r')"
+          echo "Detected license file: $DETECTED_LICENSE_FILE"
+          if [ "$DETECTED_LICENSE_FILE" != "\"${EXPECTED_LICENSE_FILENAME}\"" ]; then
+            echo "::error file=${DETECTED_LICENSE_FILE}::detected license file $DETECTED_LICENSE_FILE doesn't match expected: $EXPECTED_LICENSE_FILENAME"
+            EXIT_STATUS=1
+          fi
+
+          DETECTED_LICENSE_TYPE="$(echo "$LICENSEE_OUTPUT" | jq .matched_files[0].matched_license | tr --delete '\r')"
+          echo "Detected license type: $DETECTED_LICENSE_TYPE"
+          if [ "$DETECTED_LICENSE_TYPE" != "\"${EXPECTED_LICENSE_TYPE}\"" ]; then
+            echo "::error file=${DETECTED_LICENSE_FILE}::detected license type $DETECTED_LICENSE_TYPE doesn't match expected \"${EXPECTED_LICENSE_TYPE}\""
+            EXIT_STATUS=1
+          fi
+
+          exit $EXIT_STATUS

.github/workflows/check-markdown-task.yml

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+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-markdown-task.md
+name: Check Markdown
+
+# See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/check-markdown-task.ya?ml"
+      - ".markdown-link-check.json"
+      - "Taskfile.ya?ml"
+      - "**/.markdownlint*"
+      - "**.mdx?"
+      - "**.mkdn"
+      - "**.mdown"
+      - "**.markdown"
+  pull_request:
+    paths:
+      - ".github/workflows/check-markdown-task.ya?ml"
+      - ".markdown-link-check.json"
+      - "Taskfile.ya?ml"
+      - "**/.markdownlint*"
+      - "**.mdx?"
+      - "**.mkdn"
+      - "**.mdown"
+      - "**.markdown"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by external changes.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Initialize markdownlint-cli problem matcher
+        uses: xt0rted/markdownlint-problem-matcher@v1
+
+      - name: Install Task
+        uses: arduino/setup-task@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Lint
+        run: task markdown:lint
+
+  links:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Task
+        uses: arduino/setup-task@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Check links
+        run: task --silent markdown:check-links