feature request: Fuzzy verb matching

Short example: unless I'm missing something the only way to get `:copy_path` executed is starting typing it in full until you're at `:copy_p` because that is the only match. That's a lot of typing when being used to fuzzy matching :) My muscle memory just wants to do something like `:copa` which would fuzzy match copy_path first. Shortcuts could solve this partly but configuring and learning them by heart isn't really for me me.

I didn't look in the code but I'd assume it's a matter of replacing 'starts with query or equals some shortcut' with 'fuzzy matches query': note I left out shortcuts because I guess if this were to be implemented it should be a configurable mode since shortcuts and fuzzy matching together might clash too much.

Start by locating broot's command matching and shortcut handling, then review the issue discussion for any decisions about fuzzy matching and configurability. Done means a query such as `:copa` can match `:copy_path` while the interaction with shortcuts is defined and covered by tests.

Written by the indexing model from the issue text.