gitolicious

@derailed, still waiting for your feedback on this. I have rebased the branch after the `O` hotkey [got snagged](https://github.com/derailed/k9s/commit/90a810ffc2ec5d5460ae4f43325e295f158dec65#diff-976a2dd117dd94652faa830f5bcaa7459a04b70e5d189399d05ff73b7bb25705) in the meantime.

There is an open issue #1747 for this feature. I gave it a shot in #2133 close to a year ago. Unfortunately, the PR is getting stale as @derailed seems...