Add project information in response of list and get call of all resources.

This will help to get details of project information for several resources like database, droplet, volume etc.

No files, tests, or entry points are named. Start by surveying the response types and list/get methods for resources such as databases, droplets, and volumes, then determine the project information expected in each response. Done means the relevant resource responses consistently expose project details and are covered by appropriate tests.

Written by the indexing model from the issue text.