Made CVARs for volumetric features module.
Made trigger delay attribute for volumes, per player. Count down for n seconds after when a player enter. When leaving a volume trigger delay is aborted.
Made parameter parsing functions; paramtools.inc.
Made functions for setting and parsing generic volume attributes.
Updated header in files to volumetric features and paramtools.inc.
Removed unused knockback functions in zadmin.inc.
Made certain class functions into stock functions.
Added some base functions for working with modules. It's not tested, but it compiles. CVARs are not created yet.
Implemented volume events.
Function VolUpdatePlayerChanges with help from VolGetPlayerStates detects if a player leave or enter a volume between main timer intervals. This solution is not final and might be expensive. Needs to be optimized later!
