Refactors base construction consoles to be generic instead of only being meant for building the aux shuttle. The current aux base construction console behaves the exact same.
This PR is A step towards minichem, as I'll be using base construction code in it pretty heavily. More information about the whole minichem thing in this design doc
In terms of player-facing changes, this PR has made possible a neat admin-only base construction console that can be used to construct things anywhere on the z level.
Why It's Good For The Game
The current base construction console code was snowflakey and didn't follow particularly great coding practices. This fixes that and provides a solid foundation for future work.
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