Unified storage: Add quotas app to apiserver (#114425)

* initial generation

* went through doc to add new resource

* added dummy kind so grafana will run

* added dummy handler and custom route

* fix app name

* gets custom route working - still a dummy route

* adds groupOverride to manifest

* adds quotas to grpc client and server

* WIP - trying to get api recognized - not working

* Gets route working

* fixes group and resource vars

* expects group and resource as separate params

* set content-type header on response

* removes Quotas kind and regens

* Update grafana-app-sdk to v0.48.5

* Update codegen

* updates manifest

* formatting

* updates grafana-app-sdk version to 0.48.5

* regen ResourceClient mocks

* adds tests

* remove commented code

* uncomment go mod tidy

* fix tests and make update workspace

* adds quotas app to codeowners

* formatting

* make gen-apps

* deletes temp file

* fix generated folder code

* make gofmt

* make gen-go

* make update-workspace

* add COPY apps/quotas to Dockerfile

* fix test mock

* fixes undefined NewFolderStatus()

* make gen-apps, and add func for NewFolderStatus

* make gen-apps again

* make update-workspace

* regen folder_object_gen.go

* gofmt

* fix linting

* apps/folder make update-workspace

* make gen-apps

* make gen-apps

* fixes enterprise_imports.go

* go get testcontainers

* adds feature toggle

* make update-workspace

* fix go mod

* fix another client mock

---------

Co-authored-by: Steve Simpson <steve@grafana.com>

pkg/registry/apps/apps.go

@@ -3,6 +3,8 @@ package appregistry
 import (
 	"context"
 
+	"github.com/grafana/grafana/pkg/registry/apps/quotas"
+	"github.com/open-feature/go-sdk/openfeature"
 	"k8s.io/client-go/rest"
 
 	"github.com/grafana/grafana-app-sdk/app"
@@ -44,12 +46,17 @@ func ProvideAppInstallers(
 	exampleAppInstaller *example.ExampleAppInstaller,
 	advisorAppInstaller *advisor.AdvisorAppInstaller,
 	alertingHistorianAppInstaller *historian.AlertingHistorianAppInstaller,
+	quotasAppInstaller *quotas.QuotasAppInstaller,
 ) []appsdkapiserver.AppInstaller {
+	featureClient := openfeature.NewDefaultClient()
 	installers := []appsdkapiserver.AppInstaller{
 		playlistAppInstaller,
 		pluginsApplInstaller,
 		exampleAppInstaller,
 	}
+	if featureClient.Boolean(context.Background(), featuremgmt.FlagKubernetesUnifiedStorageQuotas, false, openfeature.TransactionContext(context.Background())) {
+		installers = append(installers, quotasAppInstaller)
+	}
 	//nolint:staticcheck // not yet migrated to OpenFeature
 	if features.IsEnabledGlobally(featuremgmt.FlagKubernetesShortURLs) {
 		installers = append(installers, shorturlAppInstaller)