fix(components，website): 重构Breadcrumb

[huskylengcb]

affects: @gio-design/components, website

[codecov]

Codecov Report

Merging #132 into master will decrease coverage by 0.23%.
The diff coverage is 47.05%.

@@            Coverage Diff             @@
##           master     #132      +/-   ##
==========================================
- Coverage   64.06%   63.83%   -0.24%     
==========================================
  Files          60       60              
  Lines        1511     1529      +18     
  Branches      406      409       +3     
==========================================
+ Hits          968      976       +8     
- Misses        540      550      +10     
  Partials        3        3              

Impacted Files	Coverage Δ
...omponents/src/components/breadcrumb/Breadcrumb.tsx	0.00% <0.00%> (ø)
...nents/src/components/breadcrumb/BreadcrumbItem.tsx	0.00% <0.00%> (ø)
.../src/components/breadcrumb/BreadcrumbSeparator.tsx	0.00% <ø> (ø)
...ckages/components/src/components/button/button.tsx	84.44% <ø> (+0.57%)	⬆️
...omponents/src/components/pagination/Pagination.tsx	82.97% <100.00%> (+2.97%)	⬆️

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[azure-pipelines]

Deploy preview for ready! ✅ https://deploy-preview-132--gio-design.surge.sh

[itiiss]

path是否考虑加个#不会跳转到demo别的页面

[huskylengcb]

可以

[azure-pipelines]

Deploy preview for ready! ✅ https://deploy-preview-132--gio-design.surge.sh

[jack0pan]

@huskylengcb

1. 补充测试，不要让测试覆盖率掉下来。
2. 把组件的 interface 都放到 interface.ts 文件，参考 Avatar 组件。