IWF-274: Optimize Timer creation

[bowersj27]

Description

Checklist

• Code compiles correctly
• Tests for the changes have been added
• All tests passing
• This PR change is backwards-compatible
• This PR CONTAINS a (planned) breaking change (it is not backwards compatible)

Related Issue

Closes #465

[longquanzheng]

Very great job!! this is quite complicated, but I believe it's worth it.

[longquanzheng]

Would be great to add a new test case to it -- especially the idleTimeout pattern, which is that main use case that this optimization is for.

Most of the code can be from any_timer_signal_test
https://github.com/indeedeng/iwf/blob/main/integ/workflow/any_timer_signal/routers.go#L47
Currently it’s
S1-1->S1-2->S2-1

S1-1 will wait for timer, S1-2 will wait for timer+signal.

We can change it to
S1-1->S1-2->(maybe a few more iterations) -> completeWF

Both S1-1 and S1-2 will wait for signal+timer and only the second timer will fired. We will expect only one timer was started in Temporal.
Maybe we have to check history events like this: https://github.com/indeedeng/iwf/blob/main/integ/wait_until_search_attributes_optimization_test.go#L133
(and only doing it for Temporal is fine)

[bowersj27]

Moved interfaces to it's own package. There's a fair amount of IDE refactored code because of this. The main changes to review are

• workflowImpl
• greedyTimerScheduler
• greedyTimerProcessor
• new integTests

[codecov]

Codecov Report

Attention: Patch coverage is 93.12321% with 24 lines in your changes missing coverage. Please review.

Project coverage is 65.70%. Comparing base (2d552b8) to head (06500dc).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
service/interpreter/timers/greedyTimerProcessor.go	92.59%	7 Missing and 1 partial ⚠️
service/interpreter/timers/greedyTimerScheduler.go	93.75%	3 Missing and 2 partials ⚠️
service/interpreter/cadence/workflowProvider.go	85.71%	3 Missing ⚠️
service/interpreter/queryHandler.go	72.72%	2 Missing and 1 partial ⚠️
service/interpreter/temporal/workflowProvider.go	91.66%	2 Missing ⚠️
service/interpreter/activityImpl.go	88.88%	1 Missing ⚠️
service/interpreter/timers/simpleTimerProcessor.go	94.11%	1 Missing ⚠️
service/interpreter/workflowImpl.go	96.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #529      +/-   ##
==========================================
+ Coverage   64.66%   65.70%   +1.03%     
==========================================
  Files          59       62       +3     
  Lines        6639     6849     +210     
==========================================
+ Hits         4293     4500     +207     
- Misses       2067     2068       +1     
- Partials      279      281       +2     

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