Is your feature request related to a problem? Please describe.
We are already using OpenTelemetry to create traces and export data. However, we are currently still using OpenCensus to generate the EUM metrics themselves. In future, these should be generated with OpenTelemetry instead.

Describe the solution you'd like
Remove the opencensusshim and use OpenTelemetry to create metrics.
In parallel operation of two different EUM servers (OpenCensus vs OpenTelemetry) the correctness of the generated metrics will be validated.