docs: add polyfill document

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Name	Status	Preview	Comments	Updated (UTC)
zarm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 18, 2023 11:59am

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🎊 PR Preview has been successfully built and deployed to https://zarm-preview-pr-1079.surge.sh

[codecov[bot]]

Codecov Report

Merging #1079 (2dd3284) into master (de00ef8) will decrease coverage by 0.19%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1079      +/-   ##
==========================================
- Coverage   90.64%   90.46%   -0.19%     
==========================================
  Files         239      238       -1     
  Lines        5346     5326      -20     
  Branches     1227     1257      +30     
==========================================
- Hits         4846     4818      -28     
- Misses        490      498       +8     
  Partials       10       10              

see 21 files with indirect coverage changes

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