[Backport workspace-pr-integr][Workspace] Add a workspace client in workspace plugin (#6094)

[SuZhou-Joe]

• feat: add comment

• feat: update unit test

• feat: add CHANGELOG

• feat: optimize comment

• feat: optimize comment

• feat: optimize code

• feat: optimize code

---

Description

Issues Resolved

Screenshot

Testing the changes

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 55.84%. Comparing base (0f44eff) to head (b5694be).

Files	Patch %	Lines
...ade_saved_config/create_or_upgrade_saved_config.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                   Coverage Diff                    @@
##           workspace-pr-integr     #308       +/-   ##
========================================================
- Coverage                67.05%   55.84%   -11.21%     
========================================================
  Files                     3345     3057      -288     
  Lines                    65044    61052     -3992     
  Branches                 10505     9887      -618     
========================================================
- Hits                     43615    34096     -9519     
- Misses                   18849    24874     +6025     
+ Partials                  2580     2082      -498     

Flag	Coverage Δ
Linux_	?
_1	32.60% <66.66%> (-0.01%)	⬇️
_2	?
_3	43.46% <0.00%> (+<0.01%)	⬆️
_4	35.15% <0.00%> (ø)

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