* Added new Camera which is extended from Pawn.
* To use:
- Edit Project settings, and set BP_RTS_GodMode as default gamemode.
- Select your Landascape, in collision properties, make sure 'Terrain' channel is set to 'Block'
- Remember that any other Actors other than the landscape MUST have 'Ignore' for 'Terrain' channel (this is the default)

Details:
*Keeps constant distance with terrain
*Automatically avoids collision with terrain
* No jerkiness. (moving up and down)
* Experimental Tilt-on-zoom feature
Merge remote-tracking branch 'origin/pr/4'