feat(command): ✨ add Editor prompt type

[JOTSR]

Summary

Add user defined terminal editor prompt type (Editor).

Motivation

Allow full featured terminal (or ui) editor prompt.

Changes

• Add prompt/editor.ts.

Todo

• Add validations.
• Add options (maybe prefered implementer editor, only terminal or visual edito, ...).
• Implement fully (all methods).
• Add tests.
• Add doc.

Maybe choose a better name: "TextEditor", ...

[JOTSR]

@c4spar Before continuing to work on this feature (tests, improve code, and docs), does this feat right for you ?

[JOTSR]

Demo

[c4spar]

Thx @JOTSR, this feature would be very welcome 👍
closes #9