fix: Add IdempotencyStore.cs to BookingSystem.AspNetFramework.csproj

Author: Reikyo

Examples/BookingSystem.AspNetFramework/BookingSystem.AspNetFramework.csproj

@@ -462,6 +462,7 @@
     <Compile Include="Settings\AppSettings.cs" />
     <Compile Include="Settings\EngineConfig.cs" />
     <Compile Include="Stores\FacilityStore.cs" />
+    <Compile Include="Stores\IdempotencyStore.cs" />
     <Compile Include="Stores\OrderStore.cs" />
     <Compile Include="Stores\OrderTransaction.cs" />
     <Compile Include="Stores\SellerStore.cs" />