Import for OpenTelemetry traces

[digitarald]

Just wanted to have this tracked, as it needs some further exploration on what we can do with traces in the profiler and how useful it would be.

Resources:

• https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/overview.md#trace
• https://lightstep.com/blog/opentelemetry-101-what-is-tracing/
• https://www.jaegertracing.io/

┆Issue is synchronized with this Jira Task

[michaelvanstraten]

Given that OpenTelemetry is an open industry standard and widely supported by tools such as the tokio tracing crate, which actively implements the OTLP Specification format, and considering that Firefox is also set to include first-class OpenTelemetry support, adding support for this in the Profiler would be a fantastic enhancement.