Add: chinese-days

### Library name

chinese-days

### Library license

https://github.com/vsme/chinese-days/blob/main/LICENSE

### Library source

https://www.npmjs.com/package/chinese-days

### Files to include

- chinese-days.json
- holidays.en.ics
- holidays.ics
- index.d.ts
- index.es.js
- index.min.js