feat: add shared PgBouncer deployment

pgbouncer/configmap.yaml

@@ -0,0 +1,25 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: pgbouncer-config
+  namespace: pgbouncer
+data:
+  pgbouncer.ini: |
+    [databases]
+    gitea = host=lunarfront-postgres-do-user-35277853-0.e.db.ondigitalocean.com port=25060 dbname=gitea user=gitea
+    windmill = host=lunarfront-postgres-do-user-35277853-0.e.db.ondigitalocean.com port=25060 dbname=windmill user=windmill
+
+    [pgbouncer]
+    listen_port = 5432
+    listen_addr = 0.0.0.0
+    auth_type = plain
+    auth_file = /etc/pgbouncer/userlist.txt
+    pool_mode = transaction
+    max_client_conn = 200
+    default_pool_size = 5
+    min_pool_size = 1
+    reserve_pool_size = 2
+    server_tls_sslmode = require
+    ignore_startup_parameters = extra_float_digits
+    log_connections = 0
+    log_disconnections = 0