feat(button): add loading attribute to button to initialize a spinner

[Kimi-Gao]

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Extra checklist:

• Update API docs for the component.
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• Add unit tests for the feature.

Relative issue:
re #61

Description:

• Upgrade react/dom/min to latest cuz hooks need.
• Add loading style to button
• Click event will be invalid when button is loading
• Remove unused prop circle

Gif:

[codecov]

Codecov Report

Merging #76 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master      #76   +/-   ##
=======================================
  Coverage   10.84%   10.84%           
=======================================
  Files          70       70           
  Lines        1411     1411           
  Branches      322      322           
=======================================
  Hits          153      153           
  Misses        964      964           
  Partials      294      294

Impacted Files	Coverage Δ
src/components/Button/index.js	91.66% <100%> (ø)	⬆️

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