feat: ts migration super-editor package#1369

harbournick wants to merge 17 commits intomainsuperdoc-dev/superdoc:mainfrom

nick/sd-670-ts-migration-phase-3c-migrate-super-editor-extensionssuperdoc-dev/superdoc:nick/sd-670-ts-migration-phase-3c-migrate-super-editor-extensionsCopy head branch name to clipboard