build: support more strict tslint

[vthinkxie]

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
[ ] Feature
[x] 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: #660

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov]

Codecov Report

Merging #2165 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #2165   +/-   ##
======================================
  Coverage      96%     96%           
======================================
  Files         479     479           
  Lines       11697   11697           
  Branches     1564    1564           
======================================
  Hits        11230   11230           
  Misses        132     132           
  Partials      335     335

Impacted Files	Coverage Δ
...ts/time-picker/nz-time-value-accessor.directive.ts	92.59% <100%> (ø)	⬆️

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