Overhaul

[burdulixda]

Love this project so much that I decided to give it some much needed love. Appreciate everything you guys have done and I hope my PR gets merged as well.

Changes over version 0.9.2-pre:

Architectural changes:

• The project now uses Python 3.12 instead of 3.10;
• The project now uses PySide6 (Qt6) instead of PySide2 (Qt5);
• Updated all dependencies and tools, including 7-Zip for better security and stability;
• The project now uses Qt file pickers instead of system-specific ones to improve cross-platform stability.

Design changes:

• Qt6 allows for much more modern and cross-compatible UI;
• Users can now switch between Light and Dark themes.

Bug fixes:

• Fix DLC size calculation (always reported 0KB)
• Fix not being able to use Open Folder on DLCs

I tested the program extensively and so far I've not encountered any bugs.

Any feedback is appreciated.

[burdulixda]

Obviously this PR is not yet ready to be merged straight away, I just published it to gather feedback.

[burdulixda]

@Systemcluster ready for review and merging.

[Systemcluster]

Thank you, this is fantastic! I'll look over it in more detail in the coming days. 👍

[burdulixda]

That's great! I have a lot more where that came from. Already have a list of "nice to haves" from the community and I'll push a new PR over the weekend.