Research: Explore ways to expose pipelines state as a graph

[tigrannajaryan]

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Explore ways to expose pipelines state as a graph. We want to clearly expose data propagation through pipeline, show in/drop/out for each component.

One possible approach is to model each component as a service of a distributed system and use spans to describe operations. This would result in displaying of Collector internals as a graph in backend which automatically perform such operation based on span propagation.