[persistence/tasks] Simplify task implementations

[3vilhamster]

What changed?
I've refactored common task fields into a struct and embedded it in all task implementations. This allows me to remove a lot of code.

Why?
Remove copypasted code and simplify task implementations.
-567 lines of code

How did you test it?
Unit tests/integration tests

Potential risks

Release notes

Documentation Changes

[codecov]

Codecov Report

Merging #5812 (db17a06) into master (2f67371) will decrease coverage by 0.11%.
The diff coverage is 85.43%.

Additional details and impacted files

Files	Coverage Δ
common/persistence/data_manager_interfaces.go	95.50% <ø> (-2.89%)	⬇️
common/persistence/tasks.go	100.00% <100.00%> (ø)
service/history/execution/timer_sequence.go	88.26% <100.00%> (+0.22%)	⬆️
service/history/execution/mutable_state_builder.go	40.17% <0.00%> (-0.04%)	⬇️
service/history/execution/mutable_state_util.go	71.51% <0.00%> (-0.46%)	⬇️
service/history/engine/engineimpl/historyEngine.go	37.88% <0.00%> (-0.04%)	⬇️
.../history/execution/mutable_state_task_generator.go	67.31% <82.75%> (+1.35%)	⬆️

... and 5 files with indirect coverage changes

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[coveralls]

Pull Request Test Coverage Report for Build 018e6732-3c0d-4572-8c52-d5b388399636

Details

• 116 of 498 (23.29%) changed or added relevant lines in 8 files are covered.
• 67 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.2%) to 65.204%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
service/history/execution/mutable_state_builder.go	0	3	0.0%
service/history/execution/mutable_state_util.go	0	3	0.0%
service/history/engine/engineimpl/historyEngine.go	0	4	0.0%
common/persistence/persistence-tests/executionManagerTestForEventsV2.go	0	17	0.0%
common/persistence/persistence-tests/persistenceTestBase.go	0	20	0.0%
common/persistence/persistence-tests/executionManagerTest.go	0	335	0.0%

Files with Coverage Reduction	New Missed Lines	%
service/history/task/transfer_standby_task_executor.go	2	87.42%
common/persistence/sql/sqlplugin/postgres/task.go	2	73.4%
common/persistence/sql/sqlplugin/postgres/db.go	2	80.0%
common/util.go	2	91.78%
common/task/fifo_task_scheduler.go	3	84.54%
service/history/queue/timer_queue_processor_base.go	3	77.82%
service/history/queue/timer_gate.go	3	95.83%
common/persistence/statsComputer.go	3	95.36%
service/history/task/fetcher.go	4	85.05%
common/persistence/nosql/nosqlplugin/cassandra/workflow_parsing_utils.go	12	86.78%

Totals
Change from base Build 018e65bd-b15a-441a-b795-bc7578fc4a8f:	-0.2%
Covered Lines:	95262
Relevant Lines:	146099

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💛 - Coveralls