chore: add flyer import module and configuration

- Added FlyerImportModule to AppModule imports
- Created new flyer-import module directory
- Added .kilo/ configuration directory

backend/src/flyer-import/flyer-import.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { PrismaModule } from '../prisma/prisma.module';
+import { FlyerImportController } from './flyer-import.controller';
+import { FlyerImportService } from './flyer-import.service';
+
+@Module({
+  imports: [PrismaModule],
+  controllers: [FlyerImportController],
+  providers: [FlyerImportService],
+})
+export class FlyerImportModule {}