lava fields 3v3 with optional campaign units

Version 1.6

• Protoss:
  - New Units:
  + Hybrid Destroyer, same as campaign but with less hp, and the attack is slightly faster, but a bit weaker.
  + Hybrid Reaver, same as campaign but less hp.
  - Strudtures:
  + Hybrid Obelisk, lets you train Hybrids at Gateway.
  - Upgrades:
  + All air unit armor upgrades work for the Scout.
  
• Terran:
  - Upgrades: All armor and weps upgrades are working on the campaign units.

Need to implement armor and weapon upgrades on all Protoss new units (but Scout) and all Zerg new units.