another change in this commit is having a separate render
function for the greenhouse caller to handle ui
this means there isnt a hardcoded space at the bottom to
display command and status line
this is a simple command that returns a single key from the user.
this can be used to read keystrokes in an interactive program
like how greenhouse (the pager) does it
Added emacsForwardWord and emacsBackwardWord which is used by M-f and
M-b directly. Also added M-d to ctrl delete and removed the bad old
funcion in favor of the fancy new one. Lastly I added alt delete which
deletes with emacsBackwardWord. Works identically to gnu readline
Co-authored-by: Renzix <DanielDeBruno@renzix.com>