fix: added upload formular, reorganized some files and put them into a new folder misc

tests/Feature/NavigationTest.php

@@ -0,0 +1,12 @@
+<?php
+
+use App\Models\User;
+
+it('displays upload link in navigation for authenticated users', function () {
+    $user = User::factory()->create();
+
+    $this->actingAs($user)
+        ->get('/dashboard')
+        ->assertSee('Datei-Upload')
+        ->assertSee(route('upload'));
+});