Replaces the MK-221 Riot shotgun with the ES-7.

[IroquoisLou]

About the pull request

Replaces the MK221 riot gun with the ES-7 Shockgun which fires faster and has more ammo then the MK221, but lacks the underbarrel grenade launcher, Special thanks to NHC and Blundir for the sprites.

Explain why it's good for the game

The MK221 riot gun is just a blue coloured version of the Mk221 that can only fire 20ga beanbags very slowly, a Mk221 with 12ga beanbags could fulfil it's use and would be much more useful, the Mk221 riot gun also has a UGL meaning that the MP's have no use in using the special grenade launcher meant for them, the ES-7 on the other hand is faster firing and has more ammo but can't have an underbarrel grenade launcher, encouraging MP's to use the Special grenade launcher and giving MP's a more unique riot gun.

Testing Photographs and Procedure

Changelog

🆑
add: Added the ES-7, a fast firing Non-lethal shotgun and it's sprites
del: Removed the MK221 Riot gun.
imageadd: added ES-7 ammo and gun sprites
imagedel: Replaced MK221 Riot gun sprites and 20ga beanbag ammo sprites with ES-7 ammo and ES-7.
maptweak: Changed the nightmare inserts with MK221 shotguns to having the updated ES-7
/:cl:

[cm13-github]

This pull request has conflicts, please resolve those before we can evaluate the pull request.