[TECH ED] React challenges

### Link to the coursework

https://github.com/CodeYourFuture/cyf-react-challenges/tree/master/challenge-high-score-tables

### Why are we doing this?

The way to get better at React is to practice by building small projects. 💪

To help you with project ideas, we have provided several challenges. You can see a full list of the challenges here. Some you can complete now, but some require knowledge of later weeks - look out for the "Prerequisites" section in the instructions.

We recommend that you attempt the following challenge:
High Score Table - Level 3: https://github.com/CodeYourFuture/cyf-react-challenges/tree/master/challenge-high-score-tables

### Stretch Goals:
Some other suitable projects for you to work on right now are:

Baby Names Picker https://github.com/CodeYourFuture/cyf-react-challenges/tree/master/challenge-baby-name-picker
Countries https://github.com/CodeYourFuture/cyf-react-challenges/tree/master/challenge-countries
Job Listing https://github.com/CodeYourFuture/cyf-react-challenges/tree/master/challenge-job-listing

You should complete these challenges in the order they are in above.

### Maximum time in hours

3

### How to submit

Follow submission instructions on the repos.

从链接的 cyf-react-challenges 仓库中的 High Score Table - Level 3 课程开始，并检查其前置条件和说明。在列出的 Baby Names Picker、Countries 和 Job Listing stretch goals 之前完成该 challenge，然后按照仓库的提交说明操作；完成意味着已按要求提交所选 challenge 的工作。

由索引模型根据 Issue 内容生成。