Smartbar enhancements

[lm41]

Closes #2415
Closes #2049

[itsmartashub]

While you're working on this issue, I was wondering if the last copied item should still be 'pasteable' even after we remove all items from the Florisboard clipboard?

If this isn't default behavior but rather a bug, perhaps it's also related to the fact that even when we delete all items from the clipboard, the paste button still maintains that 'active paste' state because the last copied item hasn't been removed from some paste "storage" (idk how to named the place where it still hangs)

I'm sorry if this isn't the right place to ask.

EDIT:

Ah, sorry, I was wrong. I just realised that Clear Clipboard History does not clear the last copied item, and that there is a separate Clear Primary Clip button for that. And with that logic, the active paste state works like a charm now

[patrickgold]

Thanks a lot for the changes!

I have reviewed the code and tested out the code, it works really well. My requested changes are only nitpicks or code cleanup, once that's done this is good to merge in.