Add install manifests

manifests/bases/kustomize-controller/kustomization.yaml

manifests/bases/source-controller/kustomization.yaml

manifests/install/kustomization.yaml

manifests/install/labels.yaml

manifests/install/namespace.yaml

manifests/policies/deny-ingress.yaml

manifests/policies/kustomization.yaml

manifests/rbac/cluster_role.yaml

manifests/rbac/kustomization.yaml

manifests/rbac/role.yaml