Added bonus accuracy for Squad 404 when masking

Fixed decals on models and tweaked a few settings with a few of their mechanics

Changes:
- Improved 40mm Grenade, will launch more frag with higher damage
- Masking damage bonus changed from 2x to 3x

Bugfixes:
- Fixed a slight issue with UMP45 only using smoke grenades at point blank range
- Fixed HK416's throwing knives ability

Changes:
- Made UMP9 throw Flashbangs more frequently

Bugfixes:
- Fixed a bug with UMP45, unable to throw Smoke Grenades

= Squad 404 =
"Masking"
- Able to mask themselves from the enemy once losing line of sight, making it impossible to find them (even through walls) unless line of sight is established once more.
- Once line of sight is established, has a grace period of 1 second before the enemy fully recognizes and engages them in combat, giving Squad 404 much needed first strike capabilities.
- During grace period, Squad 404 deals double damage to quickly dispatch foes.

More optimization added and fixed the 40mm grenade's broken touch code

Optimization with the code

Smoke bugfix and some improvements

Bugfixes

Additions:
- Flanking Mechanics: All T-Dolls are able to flank targets and will immediately stop when enemy is visible.
- EOD: All T-Dolls are able to dispose of visible SLAMs and Combine Mines when close enough to them.
- Group Spawns: "Squad 404" and "Antirain Team" now in the Spawn Menu.
- M16A1 has full intel on all enemy locations wherever they hide, revealing them immediately for her and her teammates to assault or flank.

Changes:
- When fighting against players: Unable to dodge bullets and damage resistance removed when leaning. Deals full damage without dropoff when player has over 100 health or armor value above zero.
- When currently in a fight, has sixth sense enabling them to immediately react to threats all around them.