refactor: use to/from_json_dict for operation serdes #467

Job	Run time
setup	5s
Basic Step	48s
Step with Name	49s
Wait State	1m 0s
Hello World	1m 4s
Wait for Callback Success	49s
Callback	48s
Multiple Wait	1m 2s
Map with Min Successful	54s
Parallel with Max Concurrency	56s
Parallel with Custom SerDes	48s
Handler Error	49s
Map with Custom SerDes	56s
Wait For Callback Failing Submitter Catchable	1m 1s
Simple Execution	49s
Wait For Callback Success Anonymous	48s
Create Callback Heartbeat	1m 14s
Wait for Condition	48s
Create Callback Mixed Operations	55s
Wait For Callback Nested	57s
Wait For Callback Heartbeat Sends	56s
Run in Child Context	51s
Steps with Retry	51s
Parallel with Failure Tolerance	52s
Map with Failure Tolerance	52s
Wait For Callback Multiple Invocations	55s
No Replay Execution	47s
Wait For Callback Serdes	49s
Step with Retry	52s
Wait For Callback Mixed Ops	54s
Callback Success	53s
Wait For Callback Submitter Failure	51s
Map with Batch SerDes	47s
Map with Max Concurrency	54s
Map Completion Config	47s
Map Large Scale	1m 7s
Run In Child Context With Failing Step	53s
Parallel with Wait	55s
Parallel Operations	53s
Parallel with Batch SerDes	52s
Wait For Callback With Child Context	55s
Wait for Callback Failure	48s
Block Example	49s
Create Callback Custom Serdes	50s
Run in Child Context Large Data	54s
Create Callback Concurrency	1m 49s
Logger Example	49s
Map Operations	52s
None Results	50s
Comprehensive Operations	1m 2s
Callback Success None	51s
	45m 20s

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