This commit adds a file that users can use to lookup available key binds
that are set.
The big benefit here is largely discoverability, as psoxizsh users no
longer are required to search thorough the entire code base looking for
binds.
That said, we *only* cover those explicitly set by psoxizsh, but
covering any created by plugins that may be used.
Still, this is a significant improvement compared to the previous
situation, and more importantly; prevents the situation from getting
worse as we add more plugins.
NOTE: Must go through prior work (util/keymap, vimp) and codebase, to properly
search and replace all instances of key binding
Paul Stemmet
42feb20e8b
