Get git delete-remote-branch working

[#51952663]
Move over git push-branch

Tests are green.

[#51952663]
Move over git-switch

[#51952663]
Move over git-sync

[Delivers #51952663]
[#51952663]

* move-simple-51952663:
  Move over git-sync
  Move over git-switch
  Move over git push-branch
  Get git delete-remote-branch working