* use action for ccache + limit cache size
* remove 'prepare cache' step for Windows
* remove libpython from CI
* fix the restore key for MacOS
* remove Rust from CI
* do not pin appimage-builder version since issue with it has been resolved
* use ccache action for CodeQL
* Rebased onto latest master
Co-authored-by: WerWolv <werwolv98@gmail.com>