[MM-57295] Bulk export: add roles and permission schemes (#26523)

* Bulk export: add roles and permission schemes

* Update mmctl docs

* Fix log

* Update mmctl tests

* Update mmctl unit tests

* Refactor to avoid extra calls

* Update translations

* Add test case

* Fix test

* Fix test

server/cmd/mmctl/docs/mmctl_export_create.rst

@@ -24,6 +24,7 @@ Options
       --include-archived-channels   Include archived channels in the export file.
       --include-profile-pictures    Include profile pictures in the export file.
       --no-attachments              Exclude file attachments from the export file.
+      --no-roles-and-schemes        Exclude roles and custom permission schemes from the export file.
 
 Options inherited from parent commands
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~