fix: if no match for a tabId is found, let the number be queried for
feat: Implemented a new options page.

Keybinds can be defined either in the option page or via the native ui.
Both can be configured to be issued once or twice.

We refactored the entire content script.
We fixed a bug where the actual runnableID was not correctly stored.
We removed the AbortController, since the implementation was simply
false.


fix: Use CSS Properties for storing colors.

fix: wrong titles (and therefore actions) on the fallbacks in the TabStore
fix: improved handling of key sequence - Now the overlay is also useable on the terminal in MDN or in youtube - though it requires still a quick ESC in advance since youtube - in particular - tries to autofocus immediately again.
It is war, in browser applications, apparently.