Enemy Spawn Locations

[Cyklan]

To spawn enemies once on the map, have a enemy spawn indicator. Wherever it will be placed on the map, that's where the next enemy will be spawned.

• [x] Editor option: which enemy can be spawned (allow for multiple)
• [x] Editor option: spawn "hordes" -> allows for 2-5 enemies of the same type to be spawned in bounds around the spawn location
• [x] Only spawn allowed enemies
• [x] Depending on how close to the final room the spawner is, determine its power level
• [ ] Depending on power level, use different model for enemy type (e.g. level 1 = regular ant, level 5 = ant in cyborg armor)
• [x] On level creation: create random spawn locations in the halls -> horde is allowed, random enemy type, has power level