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>

apps/example/Makefile

@@ -0,0 +1,9 @@
+include ../sdk.mk
+
+.PHONY: generate # Run Grafana App SDK code generation
+generate: install-app-sdk update-app-sdk
+	@$(APP_SDK_BIN) generate \
+		--source=./kinds/ \
+		--gogenpath=./pkg/apis \
+		--grouping=group \
+		--defencoding=none