Secrets: Implement Secret Plugin required flag and fatal crash on startup (#52552)

* add special handling on the plugin gathering side to check whether secrets manager plugins are enabled or not

* show disabled badge in front end if the plugin is not enabled

* Only show error in disabled badge hover if one is present (otherwise it shows "undefined")

* refactor to make use of fields already available in the DTO

* fix typo

* if there is no error returned for the plugin, just show 'disabled'

* fix typo

* Update public/app/features/plugins/admin/components/Badges/PluginDisabledBadge.tsx

Co-authored-by: Levente Balogh <balogh.levente.hu@gmail.com>

* Update frontendsettings.go

add clarifying comment

* fix unit test

* rework task to use new frontend property combined with plugin type to determine if the plugin should be disabled

* Update helpers.test.ts

revert test change

* fix unit test

* show custom uninstall message if the plugin is a secrets manager

* bogus commit to trigger precommit

* undo commit

* run precommit manually

* add some consts

* refactor a bit to pull plugin error management up a level

* re-add code squashed in merge

* fix compile issues

* add code to set plugin error fatal flag after secret migration

* refactor to move plugin startup out of Should Check func

* re-add important check

* make plugin startup errors fatal the first time we set a secret on the plugin

* rename func to make intent clearler

* remove unnecessary duplicate code from plugin mig

* fix compile error

* fix more compile errors

* add some extra logging to secrets migration

* have remote_plugin secret service managed plugin error fatal flag directly

* add blank file for eventual unit tests

* fix linting issues

* changes from PR review

* quick bit of cleanup

* add comment explaining design decision

* move more common test helpers to file

* slightly update to first time Get secret call

* add unit tests

* remove override func from provider

* fix linting issues

* add test cleanup step

* add some comments about refactoring to hacky test function

Co-authored-by: Levente Balogh <balogh.levente.hu@gmail.com>

pkg/services/secrets/kvstore/cache.go

@@ -76,3 +76,7 @@ func (kv *CachedKVStore) Rename(ctx context.Context, orgId int64, namespace stri
 	}
 	return nil
 }
+
+func (kv *CachedKVStore) GetUnwrappedStore() SecretsKVStore {
+	return kv.store
+}