完成登入畫面製作、路由調整及新增receiver控制器

app/Http/Controllers/ReceiverController.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class ReceiverController extends Controller
+{
+    public function login()
+    {
+        return view('receiver.login');
+    }
+}