chore: add plans overview

Author: ubugeeei

README.md

@@ -20,3 +20,20 @@ pnpm install
 # launch application dev server and storybook
 pnpm dev
 ```
+
+## Plans Overview
+
+### Features
+
+- [ ] Timetable
+- [ ] Staff List
+- [ ] Sponsor Map
+
+### Others
+
+- [ ] Migrate to Cloudflare Workers
+- [ ] remove PrimeVue (Carousel, Form)
+- [ ] Performance Improvements
+- [ ] Accessibility Improvements
+- [ ] Story Improvements
+- [ ] Refactor Static Datasets