Add syntheticDevice to UserDevice

[0xdev22]

Proposed Changes

Impacted Routes

Caveats

[linear]

SI-2084 Expose synthetic device information through gRPC

Add a field to the user device gRPC response that describes the attached synthetic device, if there is one.

{
  "id": "2W880ZeTvD12GtbVELoXu7TOG4N",
  // …
  "syntheticDevice": {
    "tokenId": 44
    "integrationTokenId": 1
  }
}

Make sure that this works for both the “list user’s devices” endpoint and the “get this specific device” endpoint.

The code for these things is all here.

[elffjs]

Merge in main when you get the chance. We're just going to skip this until we can remove the dependency on the net.

[elffjs]

The slot will conflict with Allyson. We will cross that bridge when the other one gets merged.

[elffjs]

@Allyson-English Could you take a quick look?