A user should be able to fetch related published data

[garethcmurphy]

Issue Name

A user should be able to fetch related published data

Summary

A user should be able to fetch top 5 related published datasets.
And top 5 downloaded datasets (requires metrics)
A new endpoint is required that returns matching datasets

Steps to Reproduce

Current Behaviour

Expected Behaviour

Extra Details

Here you should include details about the system (if it is unique) and possible information about a fix (feel free to link to code where relevant). Screenshots/GIFs are also fine here.

[stephan271]

Closed due to inactivity