Update `OpenTelemetryBuilder` to `IOpenTelemetryBuilder`

[jviau]

Issue describing the changes in this PR

resolves #issue_for_this_pr

Pull request checklist

• [x] My changes do not require documentation changes
  • [ ] Otherwise: Documentation issue linked to PR
• [x] My changes should not be added to the release notes for the next release
  • [ ] Otherwise: I've added my notes to release_notes.md
• [x] My changes do not need to be backported to a previous version
  • [ ] Otherwise: Backport tracked by issue/PR #issue_or_pr
• [x] I have added all required tests (Unit tests, E2E tests)

Additional information

OpenTelemetryBuilder is obsolete, replaced with IOpenTelemetryBuilder. This package is still preview so breaking changes are allowed.

[fabiocav]

@jviau can we please make sure we have a readme entry for this change?

[jviau]

@jviau can we please make sure we have a readme entry for this change?

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