Feat/rewrite to gluestack

[Survikrowa]

This pull request introduces two major features to the API: fetching upcoming games from IGDB with caching, and exposing a query for users' last edited game statuses. Additionally, it adds new DTOs, interfaces, and updates module wiring to support these features. There are also improvements to project documentation regarding import practices.

New IGDB Upcoming Games Query and Caching:

• Added IgdbService implementing a new IGamesProvider interface, which fetches upcoming games from IGDB, handles OAuth token management, and maps results to new DTOs. The service is provided via a new provider token (GAMES_PROVIDER). [1] [2] [3]
• Introduced a CQRS query (GetUpcomingGamesQuery and handler) that fetches upcoming games, caches results for 1 hour using NestJS cache manager, and exposes them via a new GraphQL query upcomingGames. [1] [2] [3] [4] [5] [6]
• Added supporting DTOs for external games and platforms, and a utility for timestamp conversion. [1] [2]
• Updated dependencies to include @nestjs/cache-manager and cache-manager. [1] [2]

User Last Edited Game Statuses Query:

• Added a new GraphQL query lastEditedGames to fetch the user's most recently edited game statuses, with a CQRS query and handler that retrieves and maps the data from the database. [1] [2] [3] [4] [5] [6] [7]
• Introduced a new DTO LastEditedGamesStatusDTO for the response.

Documentation and Codebase Clean-up:

• Updated .github/copilot-instructions.md with a strict rule to never use barrel exports (index.ts), and clarified import conventions for all platforms. [1] [2]
• Removed unused IGDB DTOs and schemas from igdb_games.dto.ts.

These changes improve API capabilities for game discovery and user activity, while also enhancing code maintainability and consistency.