Release 2.1.0 for LoTAS 1.7.10 to 1.19.3

Major changes:

Added 1.19.3
Made savestates more reliable, preventing corruption
Reworked the entire Pause Screen
- Added small gap between Save Items and Load items
- Changed position of text boxes to match the buttons
- Added hint text in checkboxes to tell the user to press enter to apply
- Added hint text for Jump Ticks when holding shift
- Holding shift and clicking on jump ticks counter will decrease the counter
- Disabled ticks counter when jump ticks is pressed
- Fixed crash when entering non numerical values into custom tickrate box and added hint
- Unselecting a custom tickrate box will close that box and the original button will appear
  Fixes
[♾-snapshot] Fixed crash when opening the creative inventory
Fixed hitbox of labels in InfoGui being unclickable when resizing the window to something smaller
Fixed fixedCrashDuringLoadstate not fixing crash during loadstate
[Forge] Create world spawn location was inverted
Removed
TAS-Challenge Maps (did you even know this existed?)
SeedList Screen
[Fabric] Possible fix for memory leak when loadstating

Contributions by @ScribbleLP and ^{maybe a little bit by @MCPfannkuchenYT}