Allow access to the import/Export functionality for Bamboo Cloud

Currently, creating exporting in Bamboo OnDemand / Cloud is not possible. This would be useful for users to allow them to migrate to BTF easily.
This would also help customers who want peace of mind backups.

Customers can also currently not import from BTF to OnDemand / Cloud. Could both of these features be bundled in one importer/exporter plugin?