[refactor]: use an executor class instead of closure #32

Job	Run time
setup	5s
Hello World	2m 8s
Basic Step	1m 57s
Wait State	1m 57s
Multiple Wait	1m 35s
Step with Retry	1m 56s
Wait For Callback Success Anonymous	1m 56s
Step with Name	1m 25s
Callback	1m 20s
Wait For Callback Heartbeat Sends	1m 34s
Wait For Callback With Child Context	1m 26s
Wait for Callback Success	1m 25s
Wait For Callback Mixed Ops	1m 26s
Wait For Callback Multiple Invocations	1m 34s
Wait For Callback Failing Submitter Catchable	2m 4s
Wait for Callback Failure	1m 27s
Wait for Condition	1m 57s
Map Large Scale	1m 38s
Map with Max Concurrency	1m 3s
Logger Example	1m 55s
Parallel Operations	2m 3s
Run in Child Context Large Data	1m 25s
Wait For Callback Nested	2m 1s
Parallel with Failure Tolerance	1m 57s
Steps with Retry	1m 23s
Run in Child Context	1m 7s
Map Operations Flat	1m 22s
Parallel with Batch SerDes	1m 58s
Map with Custom SerDes	1m 21s
Wait For Callback Submitter Failure	1m 13s
Simple Execution	1m 20s
Map Operations	1m 32s
Parallel Operations	1m 26s
Wait For Callback Serdes	1m 29s
Map Completion Config	1m 26s
Map with Batch SerDes	1m 26s
Handler Error	56s
Map with Min Successful	1m 55s
Block Example	2m 7s
Parallel with Wait	2m 2s
Parallel with Max Concurrency	1m 55s
Map with Failure Tolerance	1m 56s
Parallel with Custom SerDes	1m 57s
Callback Success None	1m 24s
No Replay Execution	1m 54s
Create Callback Heartbeat	1m 44s
Create Callback Custom Serdes	1m 53s
Create Callback Concurrency	2m 1s
None Results	56s
Comprehensive Operations	1m 23s
Run In Child Context With Failing Step	1m 20s
Callback Success	1m 59s
Create Callback Mixed Operations	1m 9s
	1h 24m 48s

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