feat(module:checkbox): add nzId input

[konossow]

PR Checklist

Please check if your PR fulfills the following requirements:

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

PR Type

What kind of change does this PR introduce?

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

What is the current behavior?

Issue Number: #6801

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x ] No

Other information

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #6813 (99c9833) into master (ca2d3eb) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 99c9833 differs from pull request most recent head 378a26c. Consider uploading reports for the commit 378a26c to get more accurate results

@@            Coverage Diff             @@
##           master    #6813      +/-   ##
==========================================
- Coverage   89.56%   89.55%   -0.02%     
==========================================
  Files         488      488              
  Lines       15779    15780       +1     
  Branches     2423     2423              
==========================================
- Hits        14133    14132       -1     
- Misses       1005     1006       +1     
- Partials      641      642       +1     

Impacted Files	Coverage Δ
components/checkbox/checkbox.component.ts	96.92% <100.00%> (+0.04%)	⬆️
components/tabs/tab-nav-bar.component.ts	82.33% <0.00%> (-0.71%)	⬇️

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[hsuanxyz]

LGTM