feat(module:form): support touched status update

[vthinkxie]

close #1665

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/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
[x] 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: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[codecov]

Codecov Report

Merging #1861 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #1861   +/-   ##
=======================================
  Coverage   96.07%   96.07%           
=======================================
  Files         466      466           
  Lines       11197    11197           
  Branches     1467     1467           
=======================================
  Hits        10757    10757           
  Misses        127      127           
  Partials      313      313

Impacted Files	Coverage Δ
components/form/nz-form-control.component.ts	100% <100%> (ø)	⬆️

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