[Internal] Thin Client Integration: Adds thinclient mode and performance tests.

[aavasthy]

Pull Request Template

Description

This PR is an ongoing effort to integrate the thin client into the existing codebase.
Below are results for the performance tests when using thinclient mode in stage.

Method	InvocationCount	UnrollFactor	Mean	Error	StdDev	Q3	P80	P85	P90	P95	P100	Op/s	Completed Work Items	Lock Contentions	Allocated
CreateItemAsync	Default	16	5.463 ms	3.323 ms	0.1821 ms	5.568 ms	5.572 ms	5.576 ms	5.580 ms	5.585 ms	5.589 ms	183.0	2.0000	-	43.73 KB
CreateItemStreamAsync	Default	16	5.456 ms	2.080 ms	0.1140 ms	5.519 ms	5.526 ms	5.532 ms	5.539 ms	5.546 ms	5.553 ms	183.3	2.0000	-	32.34 KB
ReadItemAsync	Default	16	2.214 ms	2.401 ms	0.1316 ms	2.281 ms	2.293 ms	2.306 ms	2.318 ms	2.330 ms	2.343 ms	451.7	2.0000	-	45.71 KB
ReadItemStreamAsync	Default	16	2.040 ms	1.522 ms	0.0834 ms	2.088 ms	2.089 ms	2.091 ms	2.093 ms	2.095 ms	2.097 ms	490.3	2.0000	-	35.61 KB
UpsertItemAsync	Default	16	6.058 ms	1.199 ms	0.0657 ms	6.095 ms	6.097 ms	6.099 ms	6.101 ms	6.103 ms	6.105 ms	165.1	2.0078	-	43.8 KB
UpsertItemStreamAsync	Default	16	5.541 ms	3.061 ms	0.1678 ms	5.630 ms	5.643 ms	5.657 ms	5.670 ms	5.683 ms	5.696 ms	180.5	2.0000	-	32.6 KB
ReplaceItemAsync	Default	16	6.029 ms	1.203 ms	0.0660 ms	6.049 ms	6.061 ms	6.072 ms	6.083 ms	6.094 ms	6.105 ms	165.9	2.0000	-	44.38 KB
ReplaceItemStreamAsync	Default	16	5.862 ms	1.105 ms	0.0606 ms	5.895 ms	5.899 ms	5.903 ms	5.907 ms	5.911 ms	5.915 ms	170.6	2.0000	-	32.71 KB
DeleteItemAsync	1	1	6.196 ms	2.730 ms	0.1496 ms	6.246 ms	6.270 ms	6.294 ms	6.319 ms	6.343 ms	6.368 ms	161.4	2.0000	-	31 KB
DeleteItemStreamAsync	1	1	5.757 ms	6.294 ms	0.3450 ms	5.915 ms	5.957 ms	5.999 ms	6.041 ms	6.082 ms	6.124 ms	173.7	2.0000	-	30.54 KB

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Closing issues

To automatically close an issue: closes #4927