feat(tracing): export OTLP trace metrics - #19672

• All applicable commits are signed and verified
  _{Digest: 8dd0bc3}

• All applicable files are owned properly
  _{Digest: cbcb5f5}

• All required reviewers must approve this pull request before it can be merged. Learn more in our FAQ.

• Needs approval from Team: apm-core-python

  _{Questions about this check? Reach out in #dx-source-code-management on Slack.
  Digest: dcabec9}

if this seems incorrect, you can retrigger the evaluation of the MergeGate by clicking on this link