feat(backend): QR-Code-System (Modul 22)

QrModule mit GET /qr/:entityType/:id.svg fuer colonies (Deep-Link
direkt zu /inspections/new), apiaries, queens, honey-batches und
storage-containers. Nutzt pdfkit-Nachbar qrcode zur SVG-Erzeugung.

ApiCore-Backend/src/app.module.ts

@@ -21,6 +21,7 @@ import { StorageModule } from './storage/storage.module';
 import { DashboardModule } from './dashboard/dashboard.module';
 import { SearchModule } from './search/search.module';
 import { ExportModule } from './export/export.module';
+import { QrModule } from './qr/qr.module';
 import { JwtAuthGuard } from './auth/guards/jwt-auth.guard';
 import { RolesGuard } from './auth/guards/roles.guard';
 
@@ -47,6 +48,7 @@ import { RolesGuard } from './auth/guards/roles.guard';
     DashboardModule,
     SearchModule,
     ExportModule,
+    QrModule,
   ],
   controllers: [],
   providers: [