add source code and readme

manifests/infrastructure/cert-manager/cert-manager.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: jetstack
+  namespace: cert-manager
+spec:
+  interval: 5m0s
+  url: https://charts.jetstack.io
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  interval: 5m
+  chart:
+    spec:
+      chart: cert-manager
+      version: "<1.19.2"
+      sourceRef:
+        kind: HelmRepository
+        name: jetstack
+        namespace: cert-manager
+      interval: 1m
+  values:
+    installCRDs: true