Remove task text and namespace name in migration
Fix lint
Add migration for namespace title
Fix renaming namespace name to title
Rename namespace name field to title
Drop text column at the end of the migration
Add migration for task text to title
Rename task text to title
Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/528
