[Presence] Add device model name and manufacturer to Presence Metadata

PiperOrigin-RevId: 649132282

internal/proto/metadata.proto

@@ -24,7 +24,7 @@ option optimize_for = LITE_RUNTIME;
 
 // The metadata of a device. Contains confidential data not to be broadcasted
 // directly in OTA.
-// NEXT_ID=5
+// NEXT_ID=8
 message DeviceIdentityMetaData {
   // The type of the device.
   DeviceType device_type = 1;
@@ -42,6 +42,12 @@ message DeviceIdentityMetaData {
   // The device_id from the MultideviceParameters file of the broadcasting
   // device
   bytes device_id = 5;
+
+  // The device's model name
+  string device_model_name = 6;
+
+  // The device's manufacturer name
+  string device_manufacturer = 7;
 }
 
 // The metadata of a device.