Sets up tab-bar-mode for EXWM, and adds simple initial configuration
and shortcuts to make it behave sanely. I had to assign tab switching
shortcuts myself, as the EXWM input key stuff doesn't work correctly
with the built-in way of setting these shortcuts in tab-bar-mode.
Change-Id: Icd96f03ae7bd2bd5f7c2d59f9aca7a1ca2e7f788
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10116
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>
e8fb39c36d
