Add pipeline to Mongodb query

[vdpjulien]

What does this PR do?

Supporting aggregate pipeline for Mongodb traces statement

Motivation

To easily identify the aggregate through the trace statement

Plugin Checklist

• [x] Unit tests.

[vdpjulien]

Hi @Qard can you enlighten us on what are the next steps and how we could move this PR forward and potentially merge it ? 🙏

[simon-id]

@vdpjulien a member from dd-trace-js needs to take over your PR to recreate it and pass the CI, i'll forward it

[simon-id]

@tlhunter would this be under the responsibility of your team ?

[oursodon]

@simon-id Any news on this? 🙏

[simon-id]

@oursodon I pinged again the relevant people, don't hesitate to ask again if you don't get a reply

[tlhunter]

We'll take a look at this soon