chore: transfer footer to rc-footer

[afc163]

🤔 This is a ...

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

🔗 Related issue link

💡 Background and solution

Use https://github.com/react-component/footer

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ 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

[tests-checker]

Could you please add tests to make sure this change works as expected?

[netlify]

Deploy preview for ant-design ready!

Built with commit d2a6db4

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[lgtm-com]

This pull request introduces 4 alerts when merging 9d3259c into a5bb161 - view on LGTM.com

new alerts:

• 4 for Unused variable, import, function or class

[codecov]

Codecov Report

Merging #18890 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #18890   +/-   ##
=======================================
  Coverage   96.91%   96.91%           
=======================================
  Files         281      281           
  Lines        7548     7548           
  Branches     2092     2103   +11     
=======================================
  Hits         7315     7315           
  Misses        231      231           
  Partials        2        2

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[lgtm-com]

This pull request introduces 1 alert when merging 7f84b1e into a5bb161 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class