v2.2.0

Been a while, but time for another upgrade! Big thanks to Shakaboyd for pointing out that lsdj-mono wasn't processing files.

• Fixed lsdj-mono which would skip everything but .MONO files, instead of the other way around
• Removed ghc dependency, because I can use std::filesystem now
• Upgraded the minimum language version to C++20
• Fixed tools returning 1 on success
• Added LSDJ_UNKNOWN_EXTENSION error
• Fixed a function missing a return statement
• Added some missing includes for Linux
• Built the Windows binaries with vs 2022