Add system settings index page and route

app/Http/Controllers/SystemSettingController.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Setting;
+use App\Services\System\SystemSettingService;
+use Illuminate\View\View;
+
+class SystemSettingController extends Controller
+{
+    public function index(SystemSettingService $service): View
+    {
+        // Ambil nilai yang sudah di-override (DB > config default).
+        $resolved = $service->all();
+
+        // Ambil meta dari DB untuk ditampilkan di tabel.
+        $settings = Setting::query()
+            ->orderBy('group')
+            ->orderBy('key')
+            ->get()
+            ->groupBy('group');
+
+        return view('settings.index', [
+            'settingsByGroup' => $settings,
+            'resolved' => $resolved,
+        ]);
+    }
+}