UEFITool / UEFIExtract / UEFIFind A65

A bugfix release, with huge thanks to all the people that reported those new bugs.

New features:

• Replaced AMI NVAR parser with KaitaiStruct-based one. This is another step towards "minimize manual parsing" goal stated by rewriting FIT/ACM/BootGuard parsers in KS, other NVRAM-related parsers will follow in the next updates.
• Added fuzzing targets for libFuzzer-compatible and AFL-compatible fuzzers, which already uncovered a treasure throve of issues. Fixes are now in development, will be gradually included in the next updates.
• Added --help (-h) and --version (-v) to UEFIExtract and UEFIFind, this makes them easier to use in scripts.

Fixes:

• Universal macOS package for UEFITool is an app bundle again, thanks to @makigumo and @mikebeaton for reporting.
• Unicode text search is working again, thanks to @nightgolfer and @mikebeaton for reporting.
• UEFIExtract and UEFIFind can again be built with slightly older versions of CMake, thanks to @platomav for reporting.
• Issues in descriptor and capsule parsing are non-fatal now, thanks to @platomav for reporting.
• "Extract body" action did not work for some section types.