Support UVMs for ContainerPlat 0.2.10

[maxtropets]

• Support parse iss/sub/svn from CWT claims.
• Add new trusted UVM (svn=104).
• ❗Clarify newly added trusted EKU before merging. UPD: commented out the verification part in the test and filed Re-enable hash-envelope UVM endorsements test #7479

I'd like to deduplicate some of the COSE parsing as a follow-up, as well as migrate SVN to integer type, whereas this will go backported to 6.x as is.

[Copilot]

Pull Request Overview

This pull request adds support for UVM endorsements in ContainerPlat version 0.2.10, which introduces a new format for encoding attestation information using CWT (CBOR Web Token) claims.

Key changes:

• Adds parsing support for issuer (iss), subject (sub), and SVN from CWT claims in UVM endorsements
• Registers a new trusted UVM root of trust with SVN 104
• Introduces a new decoding function decode_protected_header_with_cwt for the updated format

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 5 comments.

File	Description
tests/uvm_endorsements/uvm_0.2.10.cose	Adds test data file for the new UVM 0.2.10 endorsement format
src/node/uvm_endorsements.h	Adds new trusted UVM root of trust entry for ContainerPlat with SVN 104
src/node/uvm_endorsements.cpp	Implements CWT claims parsing and handles both old and new UVM endorsement formats
src/node/test/endorsements.cpp	Updates test indices and adds comprehensive test case for UVM 0.2.10