lang/squirrel: Update to 3.2 and take maintainership

• Add LICENSE_FILE
• Report correct version in .cmake files
• Disable static binary and libs
• Adjust port Makefile layout to more closely follow Porters Handbook
• Disable GNU C/C++ extensions

References:
https://github.com/albertodemichelis/squirrel/commit/af69eb70844d5830c99d24e671352b2e5e0fe255

PR: 284650