refactor: Enhance texture handling and configuration

- Removed Swagger documentation import from the main server file.
- Updated TextureInfo struct to include UploaderUsername for better texture metadata.
- Modified texture repository methods to preload Uploader information when fetching textures by hash.
- Improved texture service to handle cases where Uploader information is missing, ensuring proper caching and retrieval.
- Added Redis configuration options in the environment variable setup for better flexibility.

internal/repository/texture_repository.go

@@ -29,13 +29,13 @@ func (r *textureRepository) FindByID(ctx context.Context, id int64) (*model.Text
 
 func (r *textureRepository) FindByHash(ctx context.Context, hash string) (*model.Texture, error) {
 	var texture model.Texture
-	err := r.db.WithContext(ctx).Where("hash = ?", hash).First(&texture).Error
+	err := r.db.WithContext(ctx).Preload("Uploader").Where("hash = ?", hash).First(&texture).Error
 	return handleNotFoundResult(&texture, err)
 }
 
 func (r *textureRepository) FindByHashAndUploaderID(ctx context.Context, hash string, uploaderID int64) (*model.Texture, error) {
 	var texture model.Texture
-	err := r.db.WithContext(ctx).Where("hash = ? AND uploader_id = ?", hash, uploaderID).First(&texture).Error
+	err := r.db.WithContext(ctx).Preload("Uploader").Where("hash = ? AND uploader_id = ?", hash, uploaderID).First(&texture).Error
 	return handleNotFoundResult(&texture, err)
 }