Add the ability to set a company UUID.

Source/Meadow.Core/Gateways/Bluetooth/Definitions/Definition.cs

@@ -10,6 +10,11 @@ public class Definition : IDefinition
     /// </summary>
     public string DeviceName { get; }
 
+    /// <summary>
+    /// Gets the company ID.
+    /// </summary>
+    public short? CompanyId { get; }
+
     /// <summary>
     /// Gets the collection of services associated with this device definition.
     /// </summary>
@@ -23,6 +28,21 @@ public class Definition : IDefinition
     public Definition(string deviceName, params IService[] services)
     {
         DeviceName = deviceName;
+        CompanyId = null;
+        Services = new ServiceCollection();
+        Services.AddRange(services);
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Definition"/> class with the specified device name and services.
+    /// </summary>
+    /// <param name="companyId">The company ID (assigned number).</param>
+    /// <param name="deviceName">The name of the device.</param>
+    /// <param name="services">The services associated with the device.</param>
+    public Definition(short companyId, string deviceName, params IService[] services)
+    {
+        DeviceName = deviceName;
+        CompanyId = companyId;
         Services = new ServiceCollection();
         Services.AddRange(services);
     }
@@ -38,6 +58,11 @@ public string ToJson()
                         ""deviceName"":""{DeviceName}""
                     ";
 
+        if (CompanyId != null)
+        {
+            json += $@", ""companyIdentifier"":{CompanyId}";
+        }
+
         if (Services != null && Services.Count > 0)
         {
             json += ", \"services\": [";