feat: add puzzle component and image upload functionality

- Introduced a new Puzzle component for interactive puzzle gameplay.
- Updated StepForm to include fields for puzzle image and number of pieces.
- Implemented image upload handling in the server-side logic for steps.
- Enhanced database schema to store image URLs and puzzle piece counts.
- Added file upload utilities for managing uploaded images.
- Created routes for serving uploaded images securely.
- Updated game play routes to handle puzzle completion logic.
- Improved error handling for image uploads and puzzle configurations.

.gitignore

@@ -21,3 +21,6 @@ Thumbs.db
 # Vite
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+
+# Uploads
+/uploads