Overpass A4

New update for the map! This time around, I've reworked a LOT of things. The main change is that all trees in gameplay space have been replaced with level geometry!

Here's the full changelog:
- Replaced trees with geometry
- Added a cave system to the right side of the map
- Added safety to BLU spawn exits
- Changed RED spawn death zone into teleport zone
- Resolved BLU rocket jump access to RED spawn
- Removed the first capture point
- Moved the (former) second capture point back a bit
- Moved the (former) third capture point to before the choke
- Resolved many sightlines
- Resolved RED spawn door clarity
- Added a LEGO
- Built a 3D skybox
- Clipped all doors and corners

New update for the map! The biggest change here is the change to move the bridge to a drawbridge to cut off RED's access to BLU's backline for the first half of the map. It's a lot less cool, but I'm not too bummed of it.

Here's the full changelog:
- Changed the bridge to a drawbridge that comes down after CP3
- Changed RED spawn door textures
- Changed BLU spawn door textures
- Made BLU spawn doors stay open
- Added shortcut arrows to assist BLU team with finding newly opened shortcuts
- Changed the skybox lighting
- Changed window textures
- Raised the fences and adjusted some clips to assist with knowing which are jumpable and which are not
- Added clips to trees to prevent standing on top