Servicegraph support for producer -> consumer spans

[Samuron]

Hello and thank you for your work here! We have started using Servicegraphs and this is a great feature, but I think it can be extended to support even more cases

Is your feature request related to a problem? Please describe.
Currently servicegraph only displays relationships between services based on spans with Client and Server kinds, it may make sense to extend the funcionality to treat Producer and Consumer in similar fashion to display relationships between peers that are communicationg using some kind of messaging

Describe the solution you'd like
Treat Producer as Client and Consumer as Server and draw relationship between them

Describe alternatives you've considered
Change telemetry to use Client and Server spans insteam of Producer, Consumer

[mapno]

Hi @Samuron, thanks for opening this issue. This is exactly what this PR is addressing 😄
#1576. It should be merged into Tempo shortly.

[annanay25]

@Samuron I'll be closing this issue, feel free to reopen if you have any other questions. Thanks!