feat(module:form): nz-form-label support nzFormTooltip

[danranVm]

close #5905

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• Tests for the changes have been added (for bug fixes / features)
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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

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #5957 into master will increase coverage by 0.05%.
The diff coverage is 78.57%.

@@            Coverage Diff             @@
##           master    #5957      +/-   ##
==========================================
+ Coverage   89.92%   89.98%   +0.05%     
==========================================
  Files         463      465       +2     
  Lines       13965    14045      +80     
  Branches     2289     2309      +20     
==========================================
+ Hits        12558    12638      +80     
+ Misses        867      859       -8     
- Partials      540      548       +8     

Impacted Files	Coverage Δ
components/core/config/config.ts	100.00% <ø> (ø)
components/form/form.module.ts	100.00% <ø> (ø)
components/form/form-label.component.ts	86.66% <75.00%> (-8.08%)	⬇️
components/form/form.directive.ts	100.00% <100.00%> (ø)
components/typography/text-copy.component.ts	94.73% <0.00%> (-5.27%)	⬇️
components/table/src/table-style.service.ts	94.82% <0.00%> (-1.73%)	⬇️
components/tabs/tab-nav-bar.component.ts	81.62% <0.00%> (-0.71%)	⬇️
components/tooltip/base.ts	91.50% <0.00%> (-0.46%)	⬇️
components/tooltip/tooltip.ts	100.00% <0.00%> (ø)
components/tag/tag.component.ts	100.00% <0.00%> (ø)
... and 17 more

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[hsuanxyz]

非 string 时，是不是结构化指令更灵活一些？

<nz-form-label>
  Label
  <i *nzFormTooltip nz-icon nz-tooltip></i>
</nz-form-label>

[danranVm]

@hsuanxyz 这样的话，nzFormTooltip 只是加一个 class 吗？那好像意义也不是很大？不使用这个 API 代码量也差不多。

我认为可能更多的使用方式还是这种更好些？

<nz-form-label [nzFormTooltip]="{ title: 'title', icon: 'info-circle'}">
  Label
</nz-form-label>

[danranVm]

如果还有更复杂的需求的话，用户就不用这个 API ，完全自己手写好了。:eyes:

[hsuanxyz]

@danranVm 现在看是只有一个 class，不过用对象的话 icon 本部分就没办法全局配置了，要不两个 @input ？

[danranVm]

@hsuanxyz 好、那就在全局配置里加一个 tooltipIcon: string | { type: string, theme: sting } ?

👀, 是我 vue 写多了嘛？怎么老搞这种联合类型出来。

[hsuanxyz]

@danranVm 😂 一个也行，只是 merge 的时候要多判断一下