Stable release v6.2.2

FastTrack version 6.2.2 comes with many minor fixes and optimizations:

Added

• Enforced FFMPEG backend.
• Added tests for Windows and macOS.
• Added clang clazy and tidy code checks.

Fixed

• Fixed convergence criterion in AutoLevel.
• Fixed VideoReader behavior.
• Fixed several minor memory leaks in the UI.
• Fixed ctor parent argument for QObject.
• Fixed move and assignment move ctor to follow cppcoreguidelines.

Optimized

• Optimized qstring-allocations.
• Optimized Data reading.
• Optimized image display.
• Optimized args-by-ref and args-by-value.

Changed

• Update to Qt6.2.3 LTS.