Switch repository root

[Cornelius Riemenschneider]

Hi,

I work in a repo with submodules. Sometimes, I touch a submodule and would like to edamagit to help me with committing my changes in the submodule. So far, the only solution I found for that is to open another vscode instance that opens the submodule folder directly.
It would be great to have some sort of "switch root" option, so that edamagit could run in the submodule, and then I later could switch to the superproject and update the submodule pointer.

Thanks for the great project!