[Darwin] VID and PID accessors to MTRDevice (project-chip#36239)

* [Darwin] VID and PID accessors to MTRDevice

- Exposes VID/PID on MTRDevice as API

* apply restyle suggestions

---------

Co-authored-by: Kiel Oleson <kielo@apple.com>

Author: anush-apple

src/darwin/Framework/CHIP/MTRDevice.h

@@ -107,6 +107,20 @@ MTR_AVAILABLE(ios(16.1), macos(13.0), watchos(9.1), tvos(16.1))
  */
 @property (nonatomic, readonly, nullable, copy) NSNumber * estimatedSubscriptionLatency MTR_AVAILABLE(ios(17.6), macos(14.6), watchos(10.6), tvos(17.6));
 
+/**
+ * The Vendor Identifier associated with the device.
+ *
+ * A non-nil value if the vendor identifier has been determined from the device, nil if unknown.
+ */
+@property (nonatomic, readonly, nullable, copy) NSNumber * vendorID MTR_NEWLY_AVAILABLE;
+
+/**
+ * The Product Identifier associated with the device.
+ *
+ * A non-nil value if the product identifier has been determined from the device, nil if unknown.
+ */
+@property (nonatomic, readonly, nullable, copy) NSNumber * productID MTR_NEWLY_AVAILABLE;
+
 /**
  * Set the delegate to receive asynchronous callbacks about the device.
  *

src/darwin/Framework/CHIP/MTRDevice_Concrete.mm

@@ -488,6 +488,18 @@ - (NSDictionary *)_internalProperties
     return properties;
 }
 
+- (nullable NSNumber *)vendorID
+{
+    std::lock_guard lock(_descriptionLock);
+    return [_vid copy];
+}
+
+- (nullable NSNumber *)productID
+{
+    std::lock_guard lock(_descriptionLock);
+    return [_pid copy];
+}
+
 - (void)_notifyDelegateOfPrivateInternalPropertiesChanges
 {
     os_unfair_lock_assert_owner(&self->_lock);

src/darwin/Framework/CHIP/MTRDevice_XPC.mm

@@ -131,6 +131,16 @@ - (NSString *)description
         _deviceController.uniqueIdentifier];
 }
 
+- (nullable NSNumber *)vendorID
+{
+    return [[self._internalState objectForKey:kMTRDeviceInternalPropertyKeyVendorID] copy];
+}
+
+- (nullable NSNumber *)productID
+{
+    return [[self._internalState objectForKey:kMTRDeviceInternalPropertyKeyProductID] copy];
+}
+
 #pragma mark - Client Callbacks (MTRDeviceDelegate)
 
 // required methods for MTRDeviceDelegates