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

app/Filament/Resources/MemberPoints/Tables/MemberPointsTable.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Filament\Resources\MemberPoints\Tables;
+
+use Filament\Actions\BulkActionGroup;
+use Filament\Actions\DeleteBulkAction;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Filters\SelectFilter;
+use Filament\Tables\Table;
+
+class MemberPointsTable
+{
+    public static function configure(Table $table): Table
+    {
+        return $table
+            ->columns([
+                TextColumn::make('user.name')->label('Anggota')->searchable()->sortable(),
+                TextColumn::make('points')->label('Poin')->sortable()
+                    ->color(fn ($state) => $state > 0 ? 'success' : 'danger'),
+                TextColumn::make('reason')->label('Keterangan')->limit(50),
+                TextColumn::make('source_type')->label('Sumber')->badge()
+                    ->color(fn ($state) => match ($state) {
+                        'activity' => 'info',
+                        'post'     => 'warning',
+                        default    => 'gray',
+                    }),
+                TextColumn::make('created_at')->label('Tanggal')->date('d M Y')->sortable(),
+            ])
+            ->defaultSort('created_at', 'desc')
+            ->filters([
+                SelectFilter::make('source_type')->label('Sumber')
+                    ->options(['activity' => 'Kegiatan', 'post' => 'Artikel']),
+            ])
+            ->toolbarActions([BulkActionGroup::make([DeleteBulkAction::make()])]);
+    }
+}