Support adding cause as attribute on recorded exception

[JakeGinnivan]

Is your feature request related to a problem? Please describe.

When using the span.recordException, it does not record the cause attribute which means inner exceptions are lost.

Describe the solution you'd like

Use https://github.com/sindresorhus/serialize-error or similar approaches to ensure error information is not dropped.

Describe alternatives you've considered

Not using the in-built span.recordException function, instead writing a custom one which does not drop information from the exception.

Additional context

[JakeGinnivan]

Meant to report this to the underlying OTEL JS library.