refactor(module:transfer): refactor transfer

[cipchk]

• feat: add nzDisabled property

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
[x] 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

[codecov]

Codecov Report

Merging #2553 into next will decrease coverage by 0.11%.
The diff coverage is 93.75%.

@@            Coverage Diff            @@
##             next   #2553      +/-   ##
=========================================
- Coverage   95.72%   95.6%   -0.12%     
=========================================
  Files         491     491              
  Lines       12245   12215      -30     
  Branches     1681    1684       +3     
=========================================
- Hits        11721   11678      -43     
- Misses        153     167      +14     
+ Partials      371     370       -1

Impacted Files	Coverage Δ
components/transfer/nz-transfer-list.component.ts	100% <100%> (ø)	⬆️
...omponents/transfer/nz-transfer-search.component.ts	100% <100%> (ø)	⬆️
components/transfer/nz-transfer.component.ts	97.89% <87.5%> (-2.11%)	⬇️
components/breadcrumb/nz-breadcrumb.component.ts	52.5% <0%> (-34.74%)	⬇️
components/input/nz-input.directive.ts	94.44% <0%> (-1.86%)	⬇️
components/icon/nz-icon.directive.ts	92.59% <0%> (-1.67%)	⬇️
components/steps/nz-steps.component.ts	98.14% <0%> (-0.41%)	⬇️
components/tree-select/nz-tree-select.component.ts	98.19% <0%> (-0.04%)	⬇️
components/steps/nz-steps.module.ts	100% <0%> (ø)	⬆️
...ponents/breadcrumb/nz-breadcrumb-item.component.ts	100% <0%> (ø)	⬆️
... and 13 more

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