feat(module:space): support array for size

[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

nzSize 不支持数组类型，而 nzWrap 示例需要使用数组类型的 nzSize

What is the new behavior?

• nzSize 支持数组，并且将 style 实现从 margin 改为 gap（与 antd 的实现一致）
• 添加 nzWrap 示例

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 92.11%. Comparing base (7c7de92) to head (aa3290e).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9289   +/-   ##
=======================================
  Coverage   92.11%   92.11%           
=======================================
  Files         561      561           
  Lines       19609    19615    +6     
  Branches     3101     3103    +2     
=======================================
+ Hits        18062    18068    +6     
  Misses       1207     1207           
  Partials      340      340           

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[Laffery]

LGTM

[WwwHhhYran]

LGTM