Implement GraphQL resolver to get projects health stats overview

[ahmedxgouda]

Describe the solution you'd like
This resolver should return the following fields:

• Healthy projects count.
• Unhealthy projects count.
• Projects that need attention count.
• Average score over the last metrics of all projects.
• Total stars, contributors, and forks of all projects.
• Monthly overall scores of all projects (A list that has the average scores through all months).

Are you going to work on implementing this?

• Yes
• No