WIP: Add Editor component

[iron3oxide]

All Submissions:

• Have you followed the guidelines stated in CONTRIBUTING.md file?
• Have you checked to ensure there aren't any other open Pull Requests for the desired changed?

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

New Feature Submission:

• Does your submission pass the tests?
• Have you linted your code locally prior to submission?

Almost done, the component renders. Two tasks remain:

1. Finishing up get_controlled_triggers. I don't yet understand how EventHandlers receive their parameters, someone who does could be of help because it is the only way to retrieve the editors contents.
2. Figuring out why passing a custom button_list in EditorOptions to set_options doesn't seem to affect the toolbar buttons at all. The object seems to work, passing rtl for instance switches the editor to RTL mode.

Closes #995

[masenf]

Please rebase against latest main after the reflex rebranding.

[iron3oxide]

Unless someone wants to finish what I started here, I'd rather just close the PR as I don't plan on implementing this anymore.

[masenf]

supersede by #1851