Need an example / proof of concept of how to achieve stratified sampling in OpenTelemetry.NET

[kalyanaj]

Feature Request

Before opening a feature request against this repo, consider whether the feature
should/could be implemented in the other OpenTelemetry client
libraries. If so, please open an issue on
opentelemetry-specification
first.

Is your feature request related to a problem?

Certain customers using OpenTelemetry want to do achieve stratified sampling. Stratified sampling is a way to divide a population (e.g., "all queries to a service") into mutually exclusive sub-populations aka "strata". For example, the strata here could be "all user-initiated queries", "all programmatic queries". Each stratum is then sampled using a probabilistic sampling method. This ensures that all sub-populations are represented. It will be good to have an example / proof of concept that shows how to achieve this in OpenTelemetry.NET.

Describe the solution you'd like:

A sample or proof of concept for basic stratified sampling using the OpenTelemetry.NET mechanisms. I have created a proof of concept and I am creating a pull request for it.

Describe alternatives you've considered.

Which alternative solutions or features have you considered?

Additional Context

Add any other context about the feature request here.