[Feature] Add the movement by `j` and `k` using the modify `Ctrl`

[windx-foobar]

When creating or editing the connection, you can only move using the arrows. It may not be quite convenient for those who are accustomed to vim motions

[windx-foobar]

If I manage to allocate time, I can do it myself. It really does not look complicated, even if I have never tried go:)

[grafviktor]

You're very welcomed to try!

There is problem with handling Ctrl+"Some Key" combination across different platform which comes from the underlying bubbletea library. That will require some investigation, not yet sure it will work equally smoothly on Windows and *nix.