Add postgres as an optional dependency

helm/mautrix-telegram/values.yaml

@@ -45,16 +45,19 @@ homeserver:
   # Only applies if address starts with https://
   verifySSL: true
 
+postgresql:
+  enabled: true
+  postgresqlDatabase: mxtg
+  persistence:
+    size: 8Gi
+  resources:
+    requests:
+      memory: 256Mi
+      cpu: 100m
+
 # Application service host/registration related details
 # Changing these values requires regeneration of the registration.
 appservice:
-  # The full URI to the database. SQLite and Postgres are fully supported.
-  # Other DBMSes supported by SQLAlchemy may or may not work.
-  # Format examples:
-  #   SQLite:   sqlite:///filename.db
-  #   Postgres: postgres://username:password@hostname/dbname
-  database: postgres://username:password@hostname/dbname
-
   # The maximum body size of appservice API requests (from the homeserver) in mebibytes
   # Usually 1 is enough, but on high-traffic bridges you might need to increase this to avoid 413s
   maxBodySize: 1