feat: button support link type

[sendya]

This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Branch merge
• Other (about what?)

What's the background?

Add one more type & style

API Realization (Optional if not new feature)

1. button add type link

Changelog description (Optional if not new feature)

1. English description
   button support link type
2. Chinese description (optional)
   按钮 支持 link 链接按钮类型

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

Additional Plan? (Optional if not new feature)

If this PR related with other PR or following info. You can type here.

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[codecov]

Codecov Report

Merging #1077 into master will increase coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1077      +/-   ##
==========================================
+ Coverage   87.05%   87.08%   +0.02%     
==========================================
  Files         145      145              
  Lines        4837     4839       +2     
  Branches     1449     1450       +1     
==========================================
+ Hits         4211     4214       +3     
  Misses        558      558              
+ Partials       68       67       -1

Impacted Files	Coverage Δ
components/button/buttonTypes.js	100% <ø> (ø)	⬆️
components/button/button.jsx	88.67% <100%> (+2.4%)	⬆️

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[youcanping]

我升级到最新"ant-design-vue": "^1.4.0-beta.0",，button还是不支持link，我什么我的出不来呢？

[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.