Classified a3

- Rework flag return mechanics -> Flags now turn neutral before returning but disable shotclock mode
- Reduce flag return pickup cooldown from 15 -> 8 seconds
- Block off high ground flank routes from flag area to lower area
- Reduce size of bottom mid entrances

- All flag blockers now return the flag instead of dropping it
- Move some flag blockers forward

- Removed tons of unecessary areas
- Simplified spawn exits
- Merged "hub" room outside of spawn into one giant room
- Picking up the flag now adds a marked for death effect