* Zanana: Use grafana migrations to run openFGA migration files and initilize store.
* Add feature toggle
* Zanzana: return noop client if feature toggle is disabled
* Zanana: Initial work to run zanana as ebeddedn or standalone
* Add addr settings for when remote client is used.
* sync dependencies
* Lock mysql driver version
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Co-authored-by: Dan Cech <dcech@grafana.com>