Add APIApp crd

[ZITADOPER-1]

src/config/samples/zitadel_v1alpha1_apiapp.yaml

@@ -0,0 +1,12 @@
+apiVersion: zitadel.topmanage.com/v1alpha1
+kind: APIApp
+metadata:
+  labels:
+    app.kubernetes.io/name: apiapp
+    app.kubernetes.io/instance: apiapp-sample
+    app.kubernetes.io/part-of: src
+    app.kubernetes.io/managed-by: kustomize
+    app.kubernetes.io/created-by: src
+  name: apiapp-sample
+spec:
+  # TODO(user): Add fields here