matrix: introduce matrix authentication service

config/hosts/matrix/postgresql.nix

@@ -11,6 +11,11 @@
         TEMPLATE template0
         LC_COLLATE = "C"
         LC_CTYPE = "C";
+      CREATE ROLE "mas_user" WITH LOGIN PASSWORD 'mas';
+      CREATE DATABASE "mas" WITH OWNER "mas_user"
+        TEMPLATE template0
+        LC_COLLATE = "C"
+        LC_CTYPE = "C";
     '';
 
     dataDir = "/mnt/data/postgresql/${config.services.postgresql.package.psqlSchema}";