feat: tambah sistem poin anggota (kehadiran +10, artikel +5)

- Model MemberPoint + migration
- PostObserver: +5 poin saat artikel dipublish
- ActivityObserver: +10 poin saat peserta hadir di kegiatan
- MemberPointResource: tampil di grup Organisasi
- MemberPointSeeder + update ActivitySeeder dengan pivot status kehadiran
- Update PermissionSeeder: anggota bisa lihat poin

database/seeders/ActivitySeeder.php

@@ -46,7 +46,12 @@ class ActivitySeeder extends Seeder
 
         foreach ($activities as $data) {
             $activity = Activity::create(array_merge($data, ['created_by' => $pengurus?->id]));
-            $activity->participants()->sync($anggota->pluck('id'));
+
+            // Attach peserta dengan status kehadiran
+            $syncData = $anggota->mapWithKeys(fn ($user) => [
+                $user->id => ['status' => 'hadir', 'notes' => null]
+            ])->toArray();
+            $activity->participants()->sync($syncData);
         }
     }
 }