Performance: Adds use of ValueStopwatch instead of Stopwatch

[imanvt]

Pull Request Template

Description

This PR is for a performance improvement to use a new ValueStopwatch type instead of the Stopwatch type, which reduces allocations.

Micro Benchmark Test Results:

Method	Mean	Error	StdDev	Gen 0	Allocated
StopwatchAllocation	3.8487 ns	0.1114 ns	0.2876 ns	0.0093	40 B
ValueStopwatchAllocation	0.1195 ns	0.0400 ns	0.1180 ns	-	-
StopwatchAsField	8.4661 ns	0.1948 ns	0.2600 ns	0.0148	64 B
ValueStopwatchBoxedAsField	1.8442 ns	0.0438 ns	0.1272 ns	-	-

Type of change

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

Closing issues

Part 2 of 2, closes #3274

[imanvt]

due to an internal implementation detail with the ValueStopwatch, there is a concern that will cause some issues with diagnostics for the SDK. Closing the PR, may reopen if this implementation detail gets fixed.

[imanvt]

issues were caused by the stopwatch being readonly, fixed and reopening PR. Ready for review