Added Build 42 compatibility

Added more early returns when moddata is not found, in order to prevent errors

Added early returns to fix null exceptions in multiplayer

Added optional extra insight into fatigue buildup

Fixed a bug with IncludeSprinting Sandbox Option that included non-fitness/strength xp to be included in exercise fatigue

Added compatibility for brutal handworks and The Only Cure
Because of this, the code has been moved to the client folder

Simplified and refactored code

Changed default sandbox values to better represent intended experience

Regularity is now linked to the sandbox modifiers for specific exercises. This means that decreasing exercise fatigue by means of a modifier now also slows down the rate at which regularity is gained

Added UI to display the regularity for actions

Added sandbox variables

Added check so multiple xp adds on the same frame trigger multiple exercise fatigue increments
Improved detection for stomping while determining exercise

Added extra attempt to instantiate moddata
Added profession bonus regularity
Fixed possible null references when player is dead