no issue
We're spending a bit of time playing with an alternative to mobiledoc-kit to test it's feasibility as a base for future editor improvements.
- add `editor.lexicalUrl` config that points at the unpkg release by default
- set up a route on `/ghost/#/lexical-editor/post/` for the test playground which renders `<KoenigLexicialEditor>` as the editor
- adds `<KoenigLexicalEditor>` component that lazy loads the external react component
