Add initial project setup with Docker, GitHub Actions, and meal timetable functionality

- Create Dockerfile for multi-stage build
- Set up GitHub Actions workflow for CI/CD
- Implement meal and timetable fetching logic
- Add README and configuration files
- Include cron job for scheduled execution
- Establish .gitignore for build artifacts and environment files

app/README.md

@@ -0,0 +1,15 @@
+# app
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.ts
+```
+
+This project was created using `bun init` in bun v1.3.6. [Bun](https://bun.com) is a fast all-in-one JavaScript runtime.