Added basic CoolerMaster support

RGB.NET.Devices.CoolerMaster/Attributes/DeviceTypeAttribute.cs

@@ -0,0 +1,34 @@
+using System;
+using RGB.NET.Core;
+
+namespace RGB.NET.Devices.CoolerMaster.Attributes
+{
+    /// <summary>
+    /// Specifies the <see cref="RGBDeviceType"/> of a field.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Field)]
+    public class DeviceTypeAttribute : Attribute
+    {
+        #region Properties & Fields
+
+        /// <summary>
+        /// Gets the <see cref="RGBDeviceType"/>.
+        /// </summary>
+        public RGBDeviceType DeviceType { get; }
+
+        #endregion
+
+        #region Constructors
+
+        /// <summary>
+        /// Internal constructor of the <see cref="DeviceTypeAttribute"/> class.
+        /// </summary>
+        /// <param name="deviceType">The <see cref="RGBDeviceType"/>.</param>
+        public DeviceTypeAttribute(RGBDeviceType deviceType)
+        {
+            this.DeviceType = deviceType;
+        }
+
+        #endregion
+    }
+}