feat(theme:drawer): add closeAll, openDrawers method

[cipchk]

• close DrawerHelper应该支持返回创建的zorro Drawer实例，或者在路由切换时候关闭打开的抽屉 ng-alain#2377
• close 请教一个问题，使用抽屉组件时，能否人工标记决定关闭时是否执行回调。 ng-alain#2280

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/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
[ ] 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

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1627 (f6efa9d) into master (a171d50) will decrease coverage by 0.01%.
The diff coverage is 94.44%.

❗ Current head f6efa9d differs from pull request most recent head 76ccd02. Consider uploading reports for the commit 76ccd02 to get more accurate results

@@            Coverage Diff             @@
##           master    #1627      +/-   ##
==========================================
- Coverage   95.56%   95.55%   -0.01%     
==========================================
  Files         277      277              
  Lines        8604     8619      +15     
  Branches     1681     1683       +2     
==========================================
+ Hits         8222     8236      +14     
  Misses        317      317              
- Partials       65       66       +1     

Impacted Files	Coverage Δ
...ackages/theme/src/services/drawer/drawer.helper.ts	97.61% <94.44%> (-2.39%)	⬇️