chiark.greenend.org.uk/putty

[and-ri]

closed #739
depends #1850

[what-the-diff]

PR Summary

• Added a new file
• Updated URL for distributable
  The new URL for the distributable is: https://the.earth.li/~sgtatham/putty/latest/putty-{{version.marketing}}.tar.gz
• Improved version detection
  Now using regex to better detect available versions from https://www.chiarkgreenendorguk./~sgtatham//latest.html
• Build dependencies and script adjustments
  Updated build dependencies and modified the script to use the latest dependencies and build process.
• Added bin/ programs*
  Provides the necessary executable files.
• Implemented putygen version testing
  Ensured putygen program returns the correct marketing version when executed with the "--version" option.