feat: integrate NextAuth for authentication, refactor login and registration processes, and enhance middleware for session management

src/types/next-auth.d.ts

@@ -0,0 +1,23 @@
+import type { DefaultSession } from "next-auth";
+
+declare module "next-auth" {
+  interface Session {
+    user: {
+      id: string;
+      email: string;
+      roles: string[];
+    } & DefaultSession["user"];
+  }
+
+  interface User {
+    id: string;
+    email: string;
+    roles: string[];
+  }
+}
+
+declare module "next-auth/jwt" {
+  interface JWT {
+    roles: string; // Stocké comme string JSON
+  }
+}