feat: Implement Sudoku game with grid generation, validation, and solving features

- Added Sudoku grid generation with varying difficulty levels (easy, medium, hard).
- Implemented Sudoku solving functionality.
- Created a user interface for inputting and checking Sudoku solutions.
- Added validation for user inputs and error handling for invalid grids.
- Introduced a Docker configuration for easy deployment.

docker-compose.yml

@@ -0,0 +1,10 @@
+services:
+  sudoku-app:
+    image: node:20-alpine
+    working_dir: /app
+    volumes:
+      - ./:/app
+    command: sh -c "npm install && npm run build && npm start"
+    ports:
+      - "3005:3000"
+    restart: unless-stopped