Added logitech support (unfinished: HID-Ids and layouts are missing)

RGB.NET.Devices.Logitech/HID/DeviceChecker.cs

@@ -0,0 +1,57 @@
+using System.Collections.Generic;
+using HidSharp;
+
+namespace RGB.NET.Devices.Logitech.HID
+{
+    //TODO DarthAffe 04.02.2017: Rewrite this once the SDK supports per-device lighting to get all the devices connected.
+    internal static class DeviceChecker
+    {
+        #region Constants
+
+        //TODO DarthAffe 04.02.2017: Add IDs
+        private const int VENDOR_ID = 0x0;
+        private const int G910_ID = 0x0;
+        private const int G810_ID = 0x0;
+
+        #endregion
+
+        #region Properties & Fields
+
+        public static string ConnectedDeviceModel
+        {
+            get
+            {
+                if (IsG910Connected) return "G910";
+                if (IsG810Connected) return "G810";
+                return null;
+            }
+        }
+
+        public static bool IsDeviceConnected => IsG910Connected || IsG810Connected;
+        public static bool IsG910Connected { get; private set; }
+        public static bool IsG810Connected { get; private set; }
+
+        #endregion
+
+        #region Methods
+
+        internal static void LoadDeviceList()
+        {
+            IsG910Connected = false;
+            IsG810Connected = false;
+
+            HidDeviceLoader loader = new HidDeviceLoader();
+            IEnumerable<HidDevice> devices = loader.GetDevices();
+            foreach (HidDevice hidDevice in devices)
+                if (hidDevice.VendorID == VENDOR_ID)
+                {
+                    if (hidDevice.ProductID == G910_ID)
+                        IsG910Connected = true;
+                    else if (hidDevice.ProductID == G810_ID)
+                        IsG810Connected = true;
+                }
+        }
+
+        #endregion
+    }
+}