Jaeger exporter does not transform links attributes

[blumamir]

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

Following #2718 and #2731, I noticed that the jaeger exporter does not export links attributes.

Quote from the spec:

The Link's attributes cannot be represented in Jaeger explicitly. The exporter MAY additionally convert Link(s) to span Log(s):

use Span start time as the timestamp of the Log
set Log tag event=link
set Log tags trace_id and span_id from the respective SpanContext's fields
store Link's attributes as Log tags

Describe the solution you'd like

Implement span links attributes as Logs as described in the spec.

Describe alternatives you've considered

Not to export links attributes to jaeger.

Additional context

Checked in other SDKs (Ruby, Python, Java) and none of them seems to implement this behavior. Since this is optional by the spec, not implemented in other SDKs, and does not bother anyone currently, I don't think it's urgent to do it.
Opened the issue for documentation, discussion, and for the chance that someone might want to pick this one up.

[sudhanshu-chauhan]

@blumamir would like to take this up

[pichlermarc]

Closing this as not planned as the jaeger exporter is deprecated and Jaeger now supports OTLP out of the box.