MT Inventory Weight 1.2.2_1.20-1.20.4

fixing a bug in the PlayerEntityMixin.overloadJumpEffect calculations, the effect of the code worked even when there was no OVERLOAD on the player, and because there was no OVERLOAD, the Velocity calculation was incorrect and at 50% MAX_WEIGHT the player jumped 1.1 blocks and could, for example, jump over a wall or fence
added new localizashun: LOL CAT :3
added modmenu compat, added update_checker and links
Improved overload and normal weight support

Full Changelog: https://github.com/MEGATREX4/inventory-weight/compare/1.1.0_1.20-1.20.4...1.2.2_1.20-1.20.4