Apps: Add Example App to ./apps (#112069)

* [API Server] Add Example App for reference use.

* Remove Printlns.

* Upgrade app-sdk to v0.46.0, update apps to handle breaking changes.

* Only start the reconciler for the example app if the v1alpha1 API version is enabled.

* Some comment doc updates.

* Run make update-workspace

* Set codeowner for /apps/example

* Run make gofmt and make update-workspace

* Run prettier on apps/example/README.md

* Add COPY apps/example to Dockerfile

* Add an authorizer to the example app.

* Fix import ordering.

* Update apps/example/kinds/manifest.cue

Co-authored-by: Owen Diehl <ow.diehl@gmail.com>

* Run make update-workspace

* Re-run make gen-go for enterprise import updates

* Run make update-workspace

---------

Co-authored-by: Owen Diehl <ow.diehl@gmail.com>

pkg/registry/apps/apps.go

@@ -15,6 +15,7 @@ import (
 	"github.com/grafana/grafana/pkg/registry/apps/alerting/notifications"
 	"github.com/grafana/grafana/pkg/registry/apps/alerting/rules"
 	"github.com/grafana/grafana/pkg/registry/apps/correlations"
+	"github.com/grafana/grafana/pkg/registry/apps/example"
 	"github.com/grafana/grafana/pkg/registry/apps/investigations"
 	"github.com/grafana/grafana/pkg/registry/apps/logsdrilldown"
 	"github.com/grafana/grafana/pkg/registry/apps/playlist"
@@ -38,10 +39,12 @@ func ProvideAppInstallers(
 	correlationsAppInstaller *correlations.AppInstaller,
 	alertingNotificationAppInstaller *notifications.AlertingNotificationsAppInstaller,
 	logsdrilldownAppInstaller *logsdrilldown.LogsDrilldownAppInstaller,
+	exampleAppInstaller *example.ExampleAppInstaller,
 ) []appsdkapiserver.AppInstaller {
 	installers := []appsdkapiserver.AppInstaller{
 		playlistAppInstaller,
 		pluginsApplInstaller,
+		exampleAppInstaller,
 	}
 	//nolint:staticcheck // not yet migrated to OpenFeature
 	if features.IsEnabledGlobally(featuremgmt.FlagKubernetesShortURLs) {