Add AsDuplicateRequestError function

[Shaddoll]

What changed?
add a function for err match

Why?

How did you test it?
unit tests

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 018eed7f-7e79-488a-b66f-d014309bdb06

Details

• 9 of 10 (90.0%) changed or added relevant lines in 2 files are covered.
• 59 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.02%) to 67.414%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
service/history/engine/engineimpl/historyEngine.go	3	4	75.0%

Files with Coverage Reduction	New Missed Lines	%
common/persistence/sql/sqlplugin/mysql/task.go	2	73.68%
service/history/task/transfer_active_task_executor.go	2	72.7%
service/matching/matcher.go	2	90.72%
service/history/execution/mutable_state_util.go	2	78.52%
common/persistence/sql/sqlplugin/mysql/db.go	2	79.49%
common/persistence/historyManager.go	2	66.67%
service/matching/taskListManager.go	3	80.2%
service/history/task/fetcher.go	3	85.57%
service/frontend/wrappers/metered/metered.go	4	66.67%
service/history/task/transfer_standby_task_executor.go	6	87.42%

Totals
Change from base Build 018eeced-315a-46c0-b2fc-ecb9db602faf:	-0.02%
Covered Lines:	98673
Relevant Lines:	146368

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💛 - Coveralls