refactor: migrate authentication from Supabase to Better Auth and update Prisma schema models

apps/backend/src/modules/auth/auth.routes.ts

@@ -0,0 +1,9 @@
+import { Hono } from "hono";
+import { auth } from "@/lib/auth";
+import { AppEnv } from "@/types/hono";
+
+export const authRoutes = new Hono<AppEnv>();
+
+authRoutes.on(["POST", "GET"], "/api/auth/*", (c) => {
+    return auth.handler(c.req.raw);
+});