* Add basic UI for custom ruler URL
* Add build info fetching for alerting data sources
* Add keeping data sources build info in the store
* Use data source build info to construct data source urls
* Remove unused code
* Add custom ruler support in prometheus api calls
* Migrate actions
* Use thunk condition to prevent multiple data source buildinfo fetches
* Unify prom and ruler rules loading
* Upgrade RuleEditor tests
* Upgrade RuleList tests
* Upgrade PanelAlertTab tests
* Upgrade actions tests
* Build info refactoring
* Get rid of lotex ruler support action
* Add prom ruler availability checking when the buildinfo is not available
* Add rulerUrlBuilder tests
* Improve prometheus data source validation, small build info refactoring
* Change prefix based on Prometheus subtype
* Use the correct path
* Revert config routing
* Add deprecation notice for /api/prom prefix
* Add tests to the datasource subtype
* Remove custom ruler support
* Remove deprecation notice
* Prevent fetching ruler rules when ruler api is not available
* Add build info tests
* Unify naming of ruler methods
* Fix test
* Change buildinfo data source validation
* Use strings for subtype params and unveil mimir
* organise imports
* frontend changes and wordsmithing
* fix test suite
* add a nicer verbose message for prometheus datasources
* detect Mimir datasource
* fix test
* fix buildinfo test for Mimir
* shrink vectors
* add some code documentation
* DRY prepareRulesFilterQueryParams
* clarify that Prometheus does not support managing rules
* Improve buildinfo error handling
Co-authored-by: gotjosh <josue.abreu@gmail.com>
Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>
