Add initial services

como_infrastructure/migrations/20220808220223_initial_migration.sql

@@ -0,0 +1,8 @@
+-- Add migration script here
+CREATE TABLE IF NOT EXISTS users (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  username varchar not null,
+  password_hash varchar not null
+);
+
+CREATE unique index users_username_idx on users(username)