feat(module:tooltip): support changing trigger

[wzhudev]

close #4365

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 #4397 into master will decrease coverage by 0.1%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #4397      +/-   ##
==========================================
- Coverage    92.2%   92.09%   -0.11%     
==========================================
  Files         520      520              
  Lines       11039    11061      +22     
  Branches     1997     2004       +7     
==========================================
+ Hits        10178    10187       +9     
- Misses        429      443      +14     
+ Partials      432      431       -1

Impacted Files	Coverage Δ
...mponents/tooltip/base/nz-tooltip-base.directive.ts	93.57% <100%> (+2.48%)	⬆️
components/core/tree/nz-tree-base.service.ts	93.62% <0%> (-0.4%)	⬇️
components/tree/nz-tree.component.ts	97.74% <0%> (-0.07%)	⬇️
components/page-header/nz-page-header.component.ts	100% <0%> (ø)	⬆️
components/core/config/config.ts	100% <0%> (ø)	⬆️
...mponents/code-editor/nz-code-editor.definitions.ts	83.33% <0%> (ø)	⬆️
components/tree-select/nz-tree-select.component.ts	98.93% <0%> (ø)	⬆️
components/modal/nz-modal.service.ts	88.67% <0%> (+0.21%)	⬆️
components/code-editor/nz-code-editor.service.ts	3.17% <0%> (+1.09%)	⬆️

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