bulk areas query

[vnugent]

Issue #442

• New query bulkAreas(ancestors: string[]): AreaType[] to get all areas with a common ancestor path. ancestors is an array of area uuid's starting from the country root node, which is same as an area ancestors field.
• Max payload is hard coded at 10MB. I haven't tested querying some of the largest states (Colorado, CA, Utah) with all the usual fields.

In this example, we're getting Arizona and its descendants, another word any areas with ancestors starting with USA / Arizona.

@Vichy97 would something like this work?

[Vichy97]

This would work, but is there a reason we can't just pass an area id?

[vnugent]

This would work, but is there a reason we can't just pass an area id?

It's a small performance optimization (one less look up query). I can look up ancestors from area id, but the caller, the mobile app in this case, most likely has ancestors.

[vnugent]

Also, to reduce misuse the call will require the user's API key similar to update mutations.

[Vichy97]

Ok sounds good. I'll test this out when it lands