feat(module: README): add CodeFactor&Twitter

[fisherspy]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd-mobile/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[x] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[BronzeCui]

OK

[codecov]

Codecov Report

Merging #490 into master will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #490      +/-   ##
==========================================
+ Coverage   87.47%   87.52%   +0.05%     
==========================================
  Files         270      270              
  Lines        7584     7584              
  Branches     1082     1082              
==========================================
+ Hits         6634     6638       +4     
+ Misses        536      530       -6     
- Partials      414      416       +2

Impacted Files	Coverage Δ
components/picker/picker.component.ts	69% <0%> (+1.5%)	⬆️
components/picker/picker.service.ts	85% <0%> (+5%)	⬆️

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