Update and delete games (#48)

Co-authored-by: Maxime Adler <madler@sqli.com>
Reviewed-on: #48

src/GameIdeas/Client/GameIdeas.BlazorApp/Pages/Games/Gateways/IGameGateway.cs

@@ -9,4 +9,6 @@ public interface IGameGateway
     Task<int> CreateGame(GameDetailDto game);
     Task<IEnumerable<GameDto>> FetchGames(GameFilterParams filter, int currentPage);
     Task<GameDetailDto> GetGameById(int gameId);
+    Task<bool> DeleteGame(int gameIdToDelete);
+    Task<int> UpdateGame(GameDetailDto gameDto);
 }