Loot All v1.2.1

NeoForge 1.21.1:
Added an in-game config screen, and names for every config option.
Lootr is declared as an optional dependency.
The mod icon now shows in the NeoForge mod list.

Fabric:
Fixed a build failure from a truncated ModMenu download.

Build changes/fixes:
Removed all automated publishing.
Removed deprecated CI gradle/wrapper-validation-action@v2.
Removed dead code.
Added .gitignore.