feat(auth): Implement GitHub OAuth authentication flow for package publishing

- Added authentication service and GitHub OAuth integration.
- Introduced new authentication methods and structures in the model.
- Updated the API to handle authentication during the publishing process.
- Created handlers for starting and checking the status of the OAuth flow.
- Enhanced the publish handler to validate authentication credentials.
- Updated configuration to include GitHub OAuth settings.
- Added tests for the OAuth flow and publishing with authentication.
- Updated documentation to reflect changes in the API and authentication process.

internal/database/mongo.go

@@ -192,15 +192,6 @@ func (db *MongoDB) Publish(ctx context.Context, serverDetail *model.ServerDetail
 		return fmt.Errorf("version must be greater than existing version")
 	}
 
-	// update the existing entry to not be the latest version
-	if existingEntry.ID != "" {
-		_, err = db.collection.UpdateOne(ctx, bson.M{"id": existingEntry.ID}, bson.M{"$set": bson.M{"versiondetail.islatest": false}})
-		if err != nil {
-			return fmt.Errorf("error updating existing entry: %w", err)
-		}
-
-	}
-
 	serverDetail.ID = uuid.New().String()
 	serverDetail.VersionDetail.IsLatest = true
 	serverDetail.VersionDetail.ReleaseDate = time.Now().Format(time.RFC3339)
@@ -214,6 +205,15 @@ func (db *MongoDB) Publish(ctx context.Context, serverDetail *model.ServerDetail
 		return fmt.Errorf("error inserting entry: %w", err)
 	}
 
+	// update the existing entry to not be the latest version
+	if existingEntry.ID != "" {
+		_, err = db.collection.UpdateOne(ctx, bson.M{"id": existingEntry.ID}, bson.M{"$set": bson.M{"versiondetail.islatest": false}})
+		if err != nil {
+			return fmt.Errorf("error updating existing entry: %w", err)
+		}
+
+	}
+
 	return nil
 }