Add WIP Kubernetes support

k8s-manifests/postgresql.yaml

@@ -0,0 +1,34 @@
+apiVersion: "acid.zalan.do/v1"
+kind: postgresql
+metadata:
+  name: plausible-db
+spec:
+  enableConnectionPooler: true
+  connectionPooler:
+    mode: session
+    resources:
+      requests:
+        cpu: 250m
+        memory: 100Mi
+      limits:
+        cpu: "1"
+        memory: 100Mi
+  teamId: "plausible"
+  volume:
+    size: 1Gi
+  numberOfInstances: 1
+  users:
+    plausible:  # database owner
+    - superuser
+    - createdb
+  databases:
+    plausible: plausible  # dbname: owner
+  postgresql:
+    version: "12"
+  resources:
+    requests:
+      cpu: "100m"
+      memory: "1024Mi"
+    limits:
+      cpu: "1"
+      memory: "1024Mi"