Translators should support setting multiple resources in a single call

[danielrischar]

This is an issue for setting colourChroma, where the hue and saturation are included in the colourChroma resource, but the brightness is included in the dimming resource. Setting the resources one at a time will result in the wrong color being displayed between the application of both changes. For some providers, the round trip on changes is significant, and this will lead to a bad experience.

postDeviceResource should take multiple ids and payloads and convert them into a single atomic transaction with the provider, also cutting down on the number of calls that need to be made if an app wants to make significant changes or batch up multiple state changes.