refactor: rename k8s-manifests directory to manifests

- Rename all `k8s-manifests` subdirectories and files to `manifests`
- Update all file paths in `argocd-init.yml` to reflect the new directory name

🤖

manifests/cert-manager/cert-manager.jsonnet

@@ -0,0 +1,12 @@
+local app = import "../_templates/argocd_app.libsonnet";
+
+[
+app + {
+  chart:: "cert-manager",
+  repo:: "https://charts.jetstack.io",
+  version:: "v1.12.*",
+  values:: |||
+    installCRDs: true
+  |||
+},
+]

manifests/cert-manager/letsencrypt-issuers.yml

@@ -0,0 +1,34 @@
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-prod
+  namespace: cert-manager
+  annotations:
+    argocd.argoproj.io/sync-options: SkipDryRunOnMissingResource=true
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    privateKeySecretRef:
+      name: le-prod-account-key
+    solvers:
+      - http01:
+          ingress:
+            class: nginx
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-staging
+  namespace: cert-manager
+  annotations:
+    argocd.argoproj.io/sync-options: SkipDryRunOnMissingResource=true
+spec:
+  acme:
+    server: https://acme-staging-v02.api.letsencrypt.org/directory
+    privateKeySecretRef:
+      name: le-staging-account-key
+    solvers:
+      - http01:
+          ingress:
+            class: nginx

manifests/cert-manager/selfsigned-issuer.yaml

@@ -0,0 +1,10 @@
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: selfsigned
+  namespace: cert-manager
+  annotations:
+    argocd.argoproj.io/sync-options: SkipDryRunOnMissingResource=true
+spec:
+  selfSigned: {}