feat: Filter error handling and reporting

[chaitanyaprem]

Problem

As of now filter subscription failures are reported as errors which indicate specific contentTopic failure.
We need to handle reporting subscription failure due to specific reason so that appropriate retry mechanism can be applied.
e.g: If Filter subscribe fails due to filter-limit reached for the peer, then probably a different peer needs to be selected.

TBD: There are more complex cases to consider such as how to indicate this during retry (maybe consider peer exclusion)?