Move RetryActivity to the corresponding file

[Shaddoll]

What changed?
Move RetryActivity to the corresponding file

Why?

How did you test it?

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 018f9cfa-0192-46a5-a519-a550cb71d4f6

Details

• 40 of 44 (90.91%) changed or added relevant lines in 1 file are covered.
• 62 unchanged lines in 12 files lost coverage.
• Overall coverage decreased (-0.01%) to 69.218%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
service/history/execution/mutable_state_builder_methods_activity.go	40	44	90.91%

Files with Coverage Reduction	New Missed Lines	%
common/task/weighted_round_robin_task_scheduler.go	2	88.06%
common/persistence/sql/sqlplugin/postgres/task.go	2	73.4%
service/matching/tasklist/task_list_manager.go	2	76.09%
service/matching/tasklist/matcher.go	2	89.35%
common/persistence/historyManager.go	2	66.67%
service/history/handler/handler.go	3	96.2%
common/persistence/statsComputer.go	3	96.79%
service/frontend/api/handler.go	4	62.26%
service/history/task/fetcher.go	4	86.08%
common/persistence/sql/sqlplugin/postgres/db.go	9	65.0%

Totals
Change from base Build 018f9c40-fe62-4cf4-8ea6-9954fa724ff7:	-0.01%
Covered Lines:	101898
Relevant Lines:	147214

---

💛 - Coveralls

[codecov]

Codecov Report

Attention: Patch coverage is 78.37838% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 67.05%. Comparing base (02c7efb) to head (5965830).
Report is 9 commits behind head on master.

Additional details and impacted files

Files	Coverage Δ
...on/mutable_state_builder_methods_child_workflow.go	1.72% <ø> (-8.68%)	⬇️
...xecution/mutable_state_builder_methods_activity.go	40.64% <78.37%> (+3.52%)	⬆️

... and 11 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update bbe87aa...5965830. Read the comment docs.