CGM Audio/Visual Enhancements

• The models used for the Shotgun and Medium Scope are now respectively used for the Pump Shotgun and Chevron Scope in NZGE.
       As a result, these two items have received changes

      -    The Shotgun's model is edited to resemble a Benelli M4 semi-automatic shotgun, aligning with its default stats.
      -    The Medium Scope now uses its original model again with a new reticle design.

• Updated the Pistol model - made its overall length a bit shorter and repositioned the front sight.
• Changed the Shotgun's sounds to match its new model.
• Changed the Rifle's fire sound, to better suit the sound of a semi-automatic rifle.
• Moved the .cgmmeta parameter tweaks for the NZGE Hunting Rifle to the recently added Bolt Action Rifle.
• Model adjustments to the Tactical Stocks.

NOTICE: The file name format has been changed to "(name)_(release number)_(game version)" to be consistent with the file name format used for NZGE.

This also matches the format used for the file display names on CurseForge.