Perf Improvements to Custom Commands' Execution Path

[TalZaccai]

This PR introduces some perf improvements to the execution path of custom commands:

• Unlatched access to custom commands' data structures in CustomCommandManager
• Eliminating expensive string-based RespCommandInfo access for arity check by adding arity property to commands classes.

Benchmarking results:

Current branch:

CustomOperations:

Method	Params	Mean	Error	StdDev	Median	Allocated
CustomRawStringCommand	None	43.23 us	0.949 us	2.783 us	42.49 us	-
CustomObjectCommand	None	146.70 us	2.880 us	4.568 us	145.93 us	18400 B
CustomTransaction	None	92.77 us	1.545 us	2.706 us	92.05 us	-
CustomProcedure	None	72.35 us	0.595 us	0.557 us	72.15 us	-

ModuleOperations:

Method	Params	Mean	Error	StdDev	Median	Gen0	Allocated
ModuleNoOpRawStringReadCommand	None	39.59 us	0.784 us	1.863 us	38.96 us	-	-
ModuleNoOpRawStringRmwCommand	None	48.62 us	0.963 us	2.604 us	47.87 us	-	-
ModuleNoOpObjRmwCommand	None	64.37 us	1.277 us	2.491 us	64.53 us	-	3200 B
ModuleNoOpObjReadCommand	None	55.30 us	1.096 us	2.770 us	54.64 us	-	3200 B
ModuleNoOpProc	None	31.71 us	0.368 us	0.344 us	31.70 us	-	-
ModuleNoOpTxn	None	30.33 us	0.601 us	1.186 us	30.14 us	-	-
ModuleJsonGetCommand	None	125.22 us	2.487 us	5.354 us	124.29 us	-	72800 B
ModuleJsonSetCommand	None	216.43 us	2.273 us	2.015 us	216.43 us	0.4883	223200 B

main:

CustomOperations:

Method	Params	Mean	Error	StdDev	Median	Allocated
CustomRawStringCommand	None	46.06 us	0.692 us	0.824 us	45.70 us	-
CustomObjectCommand	None	175.01 us	4.435 us	12.216 us	170.85 us	24000 B
CustomTransaction	None	98.49 us	1.959 us	2.932 us	98.16 us	-
CustomProcedure	None	83.08 us	1.629 us	2.938 us	82.53 us	-

ModuleOperations:

Method	Params	Mean	Error	StdDev	Gen0	Allocated
ModuleNoOpRawStringReadCommand	None	46.36 us	0.927 us	1.624 us	-	-
ModuleNoOpRawStringRmwCommand	None	54.67 us	1.083 us	0.960 us	-	-
ModuleNoOpObjRmwCommand	None	84.71 us	1.627 us	4.400 us	-	8800 B
ModuleNoOpObjReadCommand	None	69.37 us	1.373 us	1.527 us	-	5600 B
ModuleNoOpProc	None	39.89 us	0.794 us	1.259 us	-	-
ModuleNoOpTxn	None	34.98 us	0.649 us	1.136 us	-	-
ModuleJsonGetCommand	None	131.93 us	2.474 us	4.884 us	-	72800 B
ModuleJsonSetCommand	None	235.78 us	3.061 us	2.863 us	0.4883	228801 B

[badrishc]

looking good, thanks!

[badrishc]

fix memory use by default.