✨ create oauth login

Create authentication with oAuth using a third-party vendor. Currently, only GitHub is available, but more will be added
in the future.

src/modules/auth/index.ts

@@ -0,0 +1,7 @@
+import Elysia from "elysia";
+import { githubRequestController } from "./controllers/githubRequest.controller";
+import { githubCallbackController } from "./controllers/githubCallback.controller";
+
+export const authModule = new Elysia({ prefix: "/auth" })
+  .get("/github", githubRequestController)
+  .get("/github/callback", githubCallbackController);