fix(events): optimize GetEvent query for single record

Refactored GetEvent to use First instead of Find, improving performance
and readability. This change ensures only one record is fetched by id,
removes redundant error handling, and uses idiomatic GORM practices.

Author: Kocannn

app/events/repository/get_event.go

@@ -9,10 +9,7 @@ import (
 func (repo *repository) GetEvent(ctx context.Context, eventID uint) (data domain.Event, err error) {
 	db := repo.db.DB(ctx).Model(&domain.Event{})
 
-	err = db.Where("id = ?", eventID).Find(&data).Error
-	if err != nil {
-		return
-	}
+	err = db.Where("id = ?", eventID).First(&data).Error
 
 	return data, err
-}
+}