fix: allowing custom keybinding for shortcuts 0..9

[katekorsaro]

I tried to fix custom binding for shortcuts 0..9

uda.taskwarrior-tui.keyconfig.shortcut0=H

This configuration will allow to hit H key and run shortcut0... and so on

[kdheepak]

Thank you for making a PR!

My intended way of dealing with this issue may break the behavior of this PR, but I'm happy to add this in now as a workaround and as a unstable undocumented feature :)

The short version of what I want to do is that I want to allow shortcuts of any arbitrary number, so hitting 0123 will run shortcut number 123. But doing that requires all shortcuts be mapped to just numbers.

I think with the rewrite it would be possible to map that to anything as well, but I haven't gotten there yet :)

[katekorsaro]

Your implementation sounds way cooler than mine... though I needed this quickly fixed! But I cannot wait for your implementation.
Ah, and also thank you for this awesome tool! Now part of my productive suite

[kdheepak]

I'm going to merge this now! I'll make a new release shortly!