feat(module:notification): support nzData as context in template

[wzhudev]

close #2755

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: #2755

What is the new behavior?

Now user can pass an nzData when use template in notification, this nzData would be access in the template with name data.

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[wzhudev]

I guess the demo should be optimized...

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[codecov]

Codecov Report

Merging #2926 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2926   +/-   ##
=======================================
  Coverage   97.36%   97.36%           
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  Files         524      524           
  Lines       11042    11042           
  Branches      782      782           
=======================================
  Hits        10751    10751           
  Misses        190      190           
  Partials      101      101

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[vthinkxie]

LGTM