feat(api): implement multiple realisasi for APBDes

Schema Changes:
- Add RealisasiItem model for multiple realizations per APBDesItem
- Replace realisasi field with totalRealisasi (auto-calculated sum)
- Add selisih and persentase as auto-calculated fields
- Cascade delete realisasi when item is deleted

API Changes:
- Update index.ts: Add realisasi CRUD endpoints
  - POST /:itemId/realisasi - Create realisasi
  - PUT /realisasi/:realisasiId - Update realisasi
  - DELETE /realisasi/:realisasiId - Delete realisasi
- Update create.ts: Auto-calculate totalRealisasi=0, selisih, persentase
- Update updt.ts: Reset calculations when items updated
- Update findUnique.ts: Include realisasiItems in response
- Update findMany.ts: Include realisasiItems in response
- Remove realisasi field from ApbdesItemSchema

New Files:
- realisasi/create.ts - Create realisasi with auto-calculation
- realisasi/update.ts - Update realisasi with recalculation
- realisasi/delete.ts - Soft delete with recalculation

Features:
- Auto-calculate totalRealisasi from sum of all realisasiItems
- Auto-calculate selisih = totalRealisasi - anggaran
- Auto-calculate persentase = (totalRealisasi / anggaran) * 100
- Support for bukti file attachment
- Support for keterangan (notes) per realisasi
- Soft delete support for audit trail

UI Updates:
- Update admin detail page to use totalRealisasi instead of realisasi
- Update landing page realisasiTable to use totalRealisasi

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/app/admin/(dashboard)/landing-page/apbdes/[id]/page.tsx

@@ -218,7 +218,7 @@ function DetailAPBDes() {
                             </Group>
                           </TableTd>
                           <TableTd>{item.anggaran.toLocaleString('id-ID')}</TableTd>
-                          <TableTd>{item.realisasi.toLocaleString('id-ID')}</TableTd>
+                          <TableTd>{item.totalRealisasi.toLocaleString('id-ID')}</TableTd>
                           <TableTd>
                             <Text c={item.selisih >= 0 ? 'green' : 'red'}>
                               {item.selisih.toLocaleString('id-ID')}