feat(module: tabs&tabbar): tabs&tabbar refactor

[fisherspy]

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-mobile/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?

[x] Yes
[ ] No

TabBar APIs have been changed to make it more simple.

Other information

[codecov]

Codecov Report

Merging #399 into master will decrease coverage by 0.21%.
The diff coverage is 75.92%.

@@            Coverage Diff             @@
##           master     #399      +/-   ##
==========================================
- Coverage   89.36%   89.15%   -0.22%     
==========================================
  Files         320      321       +1     
  Lines        7093     7080      -13     
  Branches      568      582      +14     
==========================================
- Hits         6339     6312      -27     
- Misses        583      589       +6     
- Partials      171      179       +8

Impacted Files	Coverage Δ
components/tab-bar/public-api.ts	100% <ø> (ø)	⬆️
components/tabs/tab-pane-body.component.ts	100% <100%> (ø)
components/tab-bar/tab-bar-item.component.ts	100% <100%> (ø)
components/tabs/tab-pane.component.ts	100% <100%> (ø)	⬆️
components/tabs/public-api.ts	100% <100%> (ø)	⬆️
components/tabs/tabs.module.ts	100% <100%> (ø)	⬆️
components/tab-bar/tab-bar.module.ts	100% <100%> (ø)	⬆️
components/tabs/default-tab-bar.component.ts	85.04% <54.28%> (-10.61%)	⬇️
components/tab-bar/tab-bar.component.ts	76.74% <61.9%> (-7.57%)	⬇️
components/tabs/tabs.component.ts	95.74% <84.61%> (-0.34%)	⬇️
... and 4 more

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[BronzeCui]

1. action-sheet 修改另外提交分支
2. tabs.component.spec.ts 中注释测试用例对应修改或删除
3. 目前api与react仍未保持一致，请再次确认，因涉及breakchange，不建议重复修改

[BronzeCui]

ok