feat(module:time-picker): support input readonly

[HyperLife1119]

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?

Not support input readonly.

Issue Number: N/A

What is the new behavior?

Support input readonly.

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 #7660 (8108926) into master (2d2fe33) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7660      +/-   ##
==========================================
+ Coverage   92.01%   92.03%   +0.01%     
==========================================
  Files         502      502              
  Lines       16750    16751       +1     
  Branches     2634     2634              
==========================================
+ Hits        15413    15417       +4     
+ Misses       1066     1064       -2     
+ Partials      271      270       -1     

Impacted Files	Coverage Δ
components/time-picker/time-picker.component.ts	94.05% <100.00%> (+0.03%)	⬆️
components/tabs/tab-nav-bar.component.ts	87.94% <0.00%> (+0.70%)	⬆️
components/core/util/text-measure.ts	92.98% <0.00%> (+0.87%)	⬆️

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[wenqi73]

LGTM