feat(module:message): support nzTop

[wzhudev]

close #3041

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
[x] No

Other information

[netlify]

Deploy preview for ng-zorro-master ready!

Built with commit 58457ee

https://deploy-preview-3047--ng-zorro-master.netlify.com

[codecov]

Codecov Report

Merging #3047 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3047      +/-   ##
==========================================
+ Coverage   97.32%   97.32%   +<.01%     
==========================================
  Files         550      550              
  Lines       11510    11525      +15     
  Branches      819      824       +5     
==========================================
+ Hits        11202    11217      +15     
  Misses        199      199              
  Partials      109      109

Impacted Files	Coverage Δ
components/notification/nz-notification-config.ts	100% <ø> (ø)	⬆️
components/message/nz-message-config.ts	100% <ø> (ø)	⬆️
...otification/nz-notification-container.component.ts	100% <100%> (ø)	⬆️
...mponents/message/nz-message-container.component.ts	96.87% <100%> (+0.32%)	⬆️
components/select/nz-select.component.ts	98.01% <0%> (+0.04%)	⬆️

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