Cold Start Optimization

[RohitRanjanMS]

When the Host gets initialized in placeholder mode, all needed assemblies get JIT compiled during placeholder mode so we will not pay the cost for JIT during Specialization. We want to exercise as much of the code path as we can during placeholder mode to avoid JIT during specialization.
Right now, none of the OTEL specific code runs during placeholder mode and OTEL will have a huge JIT time during specialization.

Cold start is a critical parameter that we closely monitor. Optimizing cold start times will enhance the user experience and encourage OTel adoption among customers.