👔 (oauth) add callback URI options

provides the option to define a callback URI following a request from the frontend; if not defined, it will
automatically use the backend's default URI.

src/modules/auth/controllers/githubRequest.controller.ts

@@ -2,12 +2,14 @@ import { Context } from "elysia";
 import { returnReadResponse } from "../../../helpers/callback/httpResponse";
 import { githubRequestService } from "../services/http/githubRequest.service";
 
-export const githubRequestController = async (ctx: Context) => {
-  const loginUrl = await githubRequestService();
+export const githubRequestController = async (
+  ctx: Context & { query: { callback?: string } }
+) => {
+  const loginUrl = await githubRequestService(ctx.query.callback);
   return returnReadResponse(
     ctx.set,
     200,
     "Login URL generated successfully",
-    String(loginUrl)
+    loginUrl
   );
 };