Added better spawn protection to heli TDM variants

-Prevented score from dropping below 0 on all domination variants
-Added logic to stop all scoring at the end of the match for dom and koth variants
-added objective fail states if the other team wins for almost all gamemodes

Fixed issue where when team B captured Bravo team A was told Obj Alpha was captured

Added objective logic to the colosseum

Shrunk down the colosseum significantly

Set team balance on the colosseum

Added the colosseum

Corrected a typo in a mission description

Added Heli Dom variant with Hydras only

Heli Dom obj contested logic should be in place and stable.