feat(module:cascader): add nzOpen to control visibility

[WwwHhhYran]

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 new behavior?

support nzOpen，consistent with Ant Design.

Does this PR introduce a breaking change?

• Yes
• No

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.13%. Comparing base (ce611e5) to head (255c303).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9339   +/-   ##
=======================================
  Coverage   92.13%   92.13%           
=======================================
  Files         561      561           
  Lines       19649    19652    +3     
  Branches     3003     3004    +1     
=======================================
+ Hits        18104    18107    +3     
  Misses       1208     1208           
  Partials      337      337           

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[Nicoss54]

LGTM

[Laffery]

please rebase master

[Laffery]

LGTM