feat(checkbox): indeterminate support for options in a checkbox group

[EmiyaYang]

This is a ...

• New feature

What's the background?

#1788

API Realization (Optional if not new feature)

1. Basic thought of solution and other optional proposal.
2. List final API realization and usage sample.
3. GIF or snapshot should be provided if includes UI/interactive modification.

// checkbox-group's option item support indeterminate field
const options = [
   { value: 'Apple' },
   { label: 'Pear', value: 'Pear' },
   { label: 'Orange', value: 'Orange', indeterminate: true },
];

What's the effect? (Optional if not new feature)

Users can pass the indeterminate as prop via checkbox group's option.

Changelog description (Optional if not new feature)

1. English description

Indeterminate support for options in a checkbox group

2. Chinese description (optional)

Checkbox Group 支持通过 option 传递 indeterminate.

Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[codecov]

Codecov Report

Merging #1831 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1831   +/-   ##
=======================================
  Coverage   88.06%   88.06%           
=======================================
  Files         157      157           
  Lines        5422     5423    +1     
  Branches     1525     1525           
=======================================
+ Hits         4775     4776    +1     
  Misses        578      578           
  Partials       69       69           

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[tangjinzhou]

有冲突，通过命令行方式 merge 了 尴尬的是最后发现这种方式没有你的记录 抱歉

[EmiyaYang]

@tangjinzhou 哈哈, 没事. 我还以为哪一步做错了

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.