feat(module:input-number): add affix and addon inputs

[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
• 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?

This can provide more convenient usage for some simple string scenarios; for complex templates, icons and select/cascader, it is recommended to use content projection.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.40%. Comparing base (b334da4) to head (1ad41f4).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9451   +/-   ##
=======================================
  Coverage   91.39%   91.40%           
=======================================
  Files         563      563           
  Lines       19801    19809    +8     
  Branches     3169     3173    +4     
=======================================
+ Hits        18098    18106    +8     
  Misses       1358     1358           
  Partials      345      345           

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[Laffery]

LGTM