feat: add legend for active overlays
Closes MIN-196
Objective
Display list of overlays legends along with theirs names in the overlays drawer
What has been done:
- implementation of overlays legends in the overlays drawer
- unit tests
Gitlab will go into maintenance tomorrow evening 14th May between 6:00-7:00pm for applying a GitLab Security and Patch Release Update.
Closes MIN-196
Display list of overlays legends along with theirs names in the overlays drawer