Added Screen Toggle feature for M3 button

app/Gpu/NvidiaGpuControl.cs

@@ -0,0 +1,70 @@
+using NvAPIWrapper.GPU;
+using NvAPIWrapper.Native;
+using NvAPIWrapper.Native.GPU;
+using NvAPIWrapper.Native.Interfaces.GPU;
+
+namespace GHelper.Gpu;
+
+public class NvidiaGpuControl : IGpuControl
+{
+    private readonly PhysicalGPU? _internalGpu;
+
+    public NvidiaGpuControl()
+    {
+        _internalGpu = GetInternalDiscreteGpu();
+    }
+
+    public bool IsValid => _internalGpu != null;
+
+    public bool IsNvidia => IsValid;
+
+    public int? GetCurrentTemperature()
+    {
+        if (!IsValid)
+            return null;
+
+        PhysicalGPU internalGpu = _internalGpu!;
+        IThermalSensor? gpuSensor =
+            GPUApi.GetThermalSettings(internalGpu.Handle).Sensors
+            .FirstOrDefault(s => s.Target == ThermalSettingsTarget.GPU);
+
+        return gpuSensor?.CurrentTemperature;
+    }
+
+    public void Dispose()
+    {
+    }
+
+    private static PhysicalGPU? GetInternalDiscreteGpu()
+    {
+        try
+        {
+            return PhysicalGPU
+                .GetPhysicalGPUs()
+                .FirstOrDefault(gpu => gpu.SystemType == SystemType.Laptop);
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+
+    public int? GetGpuUse()
+    {
+        if (!IsValid)
+            return null;
+
+        PhysicalGPU internalGpu = _internalGpu!;
+
+        IUtilizationDomainInfo? gpuUsage = GPUApi.GetUsages(internalGpu.Handle).GPU;
+
+        if (gpuUsage == null) 
+            return null;
+
+        return 
+            (int)gpuUsage?.Percentage;
+
+    }
+
+}