Add support for creating HR with .spec.ChartRef

Signed-off-by: Soule BA <bah.soule@gmail.com>

cmd/flux/testdata/create_hr/basic.yaml

@@ -0,0 +1,15 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: podinfo
+  namespace: {{ .fluxns }}
+spec:
+  chart:
+    spec:
+      chart: podinfo
+      reconcileStrategy: ChartVersion
+      sourceRef:
+        kind: HelmRepository
+        name: podinfo
+  interval: 1m0s