Fancy new version

This is a major re-write of the program

• UI is built using Avalonia UI, running on Windows and Linux alike
• Following Fluent2 design guidelines with the focus on Windows 11 experience
• Light/Dark theme support following the system settings
• Most features are preserved from v3

Missing by design:

• Settings are NOT migrated, you'll have to re-configure the new version from scratch
• An ability to select custom IRD/disc key through UI was removed (you can still put it in IRD cache folder, but this is virtually useless)

Some features are still missing:

• Can't cancel the dumping
• No progress indication in Taskbar on Windows (but the window is always-on-top by default now)
• No disc mount/unmount detection on Linux
• No trimming or AOT is applied for now, so the executable size is significantly larger

Known issues:

• Dump naming is always using default template, ignoring settings
• Toggle switches in the Settings are mirrored, also scroll position will reset to the last active element after unfocusing and refocusing the window
• Window Minimize button highlight is using background from the Light theme (can't fix it)
• Background threads can freeze the UI for a second in some circumstances
• Linux backend is using X, so you can experience issues under Wayland with HIDPI screen
• Update info popup can be too long to be useable