feat: keep up with technical recommandations

misc/compose/postgres/init-db.d/1_create_user_pve.sql

@@ -0,0 +1,7 @@
+-- IF NOT EXISTS (SELECT * FROM pg_user WHERE usename = 'lasql')then
+--     CREATE USER lasql WITH PASSWORD 'lasql';
+-- END IF;
+
+-- GRANT ALL PRIVILEGES ON DATABASE lasql TO lasql;
+-- ALTER USER lasql WITH SUPERUSER;
+