Add key binding for terminal focus

[minizilla]

Describe the Feature Request
I think adding key binding for every action is a must. For terminal focus, perhaps something like ctrl+t or tab is good enough.

[d0c-s4vage]

Yeah, working with the terminal can definitely be improved.

[d0c-s4vage]

Hmm, maybe adding a ~/.config/lookatme/keybindings.yml could be useful so that you can customize the bindings too.

[minizilla]

Thats great, looking forward to it.

[julianthome]

@d0c-s4vage this looks like an interesting entry issue for me to work on. Would it be okay with you if I am taking this on?

[d0c-s4vage]

Of course! Any issue you want to pick up!

[d0c-s4vage]

This issue is pretty closely related to this too: #191