Improve bot first spawn performance

[Mirroar]

On botarena or in seasonal, other players reach GCL2 much faster, this can be improved with a few changes:

• We don't need to optimize for CPU at that point, but can use all 100 CPU freely, so spawning 2- or 3-part creeps en masse is totally fine.
• Use as many remotes as spawn can support
• Maybe even use 1-claim claimers. Each can probably get 2 cycles of increased energy yield out of a remote room within its 600 lifespan. If respawned in time (and 2 spots around controller), this could be done indefinitely.
• Bucket brigades would increase energy transport throughput (each handoff moves energy 2 tiles instead of 1 within a single tick)
• Find sweet spot for when to build roads. Roads will allow less move parts on haulers, but we need to pay the energy to construct them. This would increase throughput especially on swamp tiles.

[Mirroar]

This can be tested on a private server, or even xxscreeps. Spawn in the same location every time and compare results in Memory.roomStats

[Mirroar]

Performance has improved greatly with better spawn priorization so now each room can support as many remotes as spawn time is available.