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/lib/comcigan.ts

@@ -0,0 +1,7 @@
+import Comcigan, { School, Weekday } from '@imnyang/comcigan.ts'
+
+const comcigan = new Comcigan()
+
+export default async function getTimetable({ schoolId, grade, classNum, weekday }: { schoolId: number, grade: number, classNum: number, weekday: number }) {
+    return await comcigan.getTimetable(schoolId, grade, classNum, weekday, false)
+}