Add in-app community config browser (#1782)

* Add community config browser

* Add same-device community config filter

* Harden community config browser

* Fix community config browser review findings

* Add community config browser translations

* Polish community config translations

* Add compatible GPU community config scope

* Avoid eager community config pagination

* Reduce community config API request pressure

* Respect community config API rate limits

* Address community config review findings

* Preserve selected community config values

* Support optional community launch settings

* Fix community config review findings

* Allow throttle cooldown updates while waiting