Adds a small module that automatically picks the right home
configuration for each machine.
For some reason, importing home-manager itself in this module causes
infinite recursion. I've not looked into why, and left the import in
the tverskoy config instead.
Change-Id: Ie27109a3c4478b198ab646b2e179999cf053980e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5552
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>
