Add - Mercenaries Faction

[Mike-MF]

Faction designed in 3 tiers, Low, Medium and High representing the challenge they provide.

Independent is utilising Green camo, Opfor is utilising Sand camo.

ToDo:

• [x] Independents Units
• [x] Independents Backpacks
• [x] Independents Weapons
• [x] Independents Vehicles
• [x] Independents Turrets
• [x] Independent Groups
• [x] Opfor Units
• [x] Opfor Backpacks
• [x] Opfor Weapons
• [x] Opfor Vehicles
• [x] Opfor Turrets
• [x] Opfor Groups
• [x] Opfor High Vest (Assets)
• [x] UI Images (JJ)