[SPIKE] Assess Data coverage feature feasibility.

[L-Evg]

Idea: calculate data coverage by tests by analysing filtration criteria used. E.g. there are three user entities (active, inactive, blocked). During tests execution only active user record was requested to be used in tests. So, two others were not and there is a gap in data covered.
Task: spike and asses whether it is feasible to implement the feature.