feat(ConfigProvider): add icons config

[guoyunhe]

增加一种通过 <ConfigProvider> 设置全局图标替换的方式：

import { SuccessFill, ErrorFill, Loading } from 'my-icon-pack'

<ConfigProvider icons={{
  ToastSuccess: SuccessFill,
  ToastFail: ErrorFill,
  ToastLoading: Loading,
}}>
  <App/>
</ConfigProvider>

[github-actions]

PR preview has been successfully built and deployed to https://antd-mobile-preview-pr-6587.surge.sh

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.52%. Comparing base (cf550e4) to head (a10882d).
Report is 8 commits behind head on master.

❗ Current head a10882d differs from pull request most recent head 13a899d. Consider uploading reports for the commit 13a899d to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6587      +/-   ##
==========================================
+ Coverage   92.34%   92.52%   +0.17%     
==========================================
  Files         318      319       +1     
  Lines        6910     6969      +59     
  Branches     1729     1760      +31     
==========================================
+ Hits         6381     6448      +67     
+ Misses        493      485       -8     
  Partials       36       36              

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
./lib/bundle/antd-mobile.es.js	137.36 KB (+347 B 🔺)	2.8 s (+0.25% 🔺)	1.2 s (+2.06% 🔺)	4 s

[github-actions]

Size Change: +1.26 kB (0%)

Total Size: 353 kB

Filename	Size	Change
./lib/bundle/antd-mobile.compatible.umd.js	190 kB	+791 B (0%)
./lib/bundle/antd-mobile.umd.js	144 kB	+492 B (0%)
./lib/bundle/style.css	17.9 kB	-18 B (0%)

ℹ️ View Unchanged

Filename	Size
./lib/bundle/css-vars-patch.css	1.43 kB

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