Add a way to fetch multiple keystrokes for a single command

[mlewand]

Type of report

Feature request

Provide description of the new feature

Some commands might have multiple hotkeys, we need to API that returns all the hotkeys.

There's already a editor.getCommandKeystroke but it supports only one returned keystroke.

An example case is link command. In 4.11.0 we added ctrl+k keystroke in addition to already existing ctrl+l.

What are the options?

• Introduce asArray (or returnMultiple or something like that) parameter that tells that the function should return an array. (We can't change currently returned value for backward compatibility)
• Introduce complimentary editor.getCommandKeystrokes (note plural form).

Looking at above I'm more keen towards additional argument. Adding an extra function will further bloat our docs.

[Comandeer]

I'd also go with parameter, returnMultiple. Having two functions with nearly identical names and different outputs could be very confusing.