Implement OCIRepository controller for public repos

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

Author: stefanprodan

config/samples/source_v1beta2_ocirepository.yaml

@@ -0,0 +1,9 @@
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: OCIRepository
+metadata:
+  name: ocirepository-sample
+spec:
+  interval: 1m
+  url: ghcr.io/stefanprodan/manifests/podinfo
+  ref:
+    tag: 6.1.6