postgres: add authentik pooler, for transaction mode

postgres/config/poolers/pooler-weyma-authentik.yaml

@@ -0,0 +1,14 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Pooler
+metadata:
+  name: pooler-weyma-rw-authentik
+spec:
+  cluster:
+    name: weyma-pgsql
+  instances: 3
+  type: rw
+  pgbouncer:
+    poolMode: transaction
+    parameters:
+      max_client_conn: "10000"
+      default_pool_size: "100"