add basic controller auth

src/modules/auth/index.ts

@@ -0,0 +1,7 @@
+import Elysia from "elysia";
+import { loginViaPassword } from "./controller/loginViaPassword.controller";
+
+export const authModule = new Elysia({ prefix: "/auth" }).post(
+  "/legacy",
+  loginViaPassword
+);