Modifying behavior of RTE controls and hotkeys.

[tascord]

I'm building a little twitter-esque application to test out some new frameworks, and while the RTE component is super useful, especially with mentions, it lacks the ability to remove the hotkeys it natively has (bold, italics, underline). Additionally even when no controls are specified, the control header is there, and it is required to use styles={{toolbar: { display: 'none'}}}.

I wish to propose the ability to specify which hotkeys you would like supported, and potentially, if no hotkeys prop is provided, use any that map to the controls found such that if, for example, the 'bold' control exists, so does its hotkey.

I would also like to propose the removal, or hiding, of the heading portion of the RTE if no controls are provided.