-Slight clean-up
-Implemented Nescius' string table overflow fix to hopefully prevent potential crashing

-Removed script from global scope to prevent potential conflicts
-Sounds are now played on the right side of the player
-Fixed sounds not playing earlier when incapped to mimic height difference
-Added addoninfo.txt

-Properly made it so that shell sounds play earlier when crouching AND moving around/etc, not only crouching

-Shells now emit sound a bit earlier when crouched to mimic height difference
-Switched shotgun shell sounds for the ones from Half-Life 2: MMod

-Reverted changes

-Slightly edited PlayShellSound function to clean the code up a bit