added form login, user for frontend and backend

app/Http/Controllers/LoginController.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
+
+class LoginController extends Controller
+{
+    public function show()
+    {
+        return view('auth.login');
+    }
+
+    public function login(Request $request)
+    {
+        $credentials = $request->validate([
+            'email'    => ['required', 'email'],
+            'password' => ['required'],
+        ]);
+
+        if (Auth::attempt($credentials, $request->boolean('remember'))) {
+            $request->session()->regenerate();
+            return redirect()->intended('/');
+        }
+
+        return back()->withErrors(['email' => 'Die eingegebenen Daten stimmen nicht überein.'])->onlyInput('email');
+    }
+
+    public function logout(Request $request)
+    {
+        Auth::logout();
+        $request->session()->invalidate();
+        $request->session()->regenerateToken();
+        return redirect('/login');
+    }
+}