1.2.0 Release

Added installing directly from an archive file
Added automatic unit detection from livery description.lua based on livery parts
Added unit detection when the livery folder is already within a unit's folder
Added installing to multiple units from one pack
Added additional DCSLM upgrade method using DCS User Files
Added F-15E, Black Shark 3 (Ka-50_3), Mirage F1BE to units
Updated J-11A unit default parts
Fixed FA-18C DCS User Files name
Fixed various issues with optimization