[Bundle] Add more details on the DDF bundle descriptor

[Zehir]

This PR is a draft to discuss about changes to do for the DDF bundles.

I don't know how you planned to store in the database from the bundle, about the DESC chunk, either we filter out some attributes to keep only a few (version_deconz, last_modified, product and device_identifiers) for the global query. Or we just return the complete DESC using just a regex to merge the JSON into the response.

The endpoint GET /api/<apikey>/ddf/descriptors should at least return more info about the bundle and the list of devices that is currently using the bundle.

Or this is planned to be added on the /devices/<mac> endpoint ?

[manup]

I like that the more detailed response is only in the single descriptor query.

The endpoint GET /api//ddf/descriptors should at least return more info about the bundle and the list of devices that is currently using the bundle.

Or this is planned to be added on the /devices/ endpoint ?

I'm not in favor to include the "used_by" array here, while it seems useful it's quite a beast to implement and can result in huge responses, for example we have networks in the wild with +150 devices all using the same DDF.

The /devices/<mac> endpoint will contain the the actual used bundle hash, hopefully that should be sufficient to build the UI.

[Zehir]

Ok np