Feature/add dashboard creation

[Dynnammo]

As a data analyst, I would like to take advantage of the POST /api/dashboard method that allows me to create a dashboard with the name provided and the collection information needed to create it at the right place.

[Dynnammo]

Some thoughts after your remarks :

• I tried to make a compromise between the API specification declared here and the way other helpers were previously designed (in this case I added the collection_name which is more muggles-compliant, and return_dashboard, which correspond to what you've done for create_card, create_dashboard, etc...)

I'll try to work on this until you consider it ready-to-merge. I turned it back into draft, since I want to test this on a local instance tomorrow. Thanks for maintaining this anyway, it helped us built some nice stuff here, so consider that we owe you some dev time if asked :raised_hands:

[github-actions[bot]]

This PR is stale because it has been open for 30 days with no activity.