Create NativeMethods

No more `lib` suffix! Won't do the same error as last times.

Mediapipe.Net/Native/NativeMethods.cs

@@ -0,0 +1,17 @@
+// Copyright (c) homuler and Vignette
+// This file is part of MediaPipe.NET.
+// MediaPipe.NET is licensed under the MIT License. See LICENSE for details.
+
+namespace Mediapipe.Net.Native
+{
+    /// <summary>
+    /// Contains all the directly bound native methods from Mediapipe.
+    /// </summary>
+    public class NativeMethods
+    {
+        /// <summary>
+        /// Name of the mediapipe shared library.
+        /// </summary>
+        internal const string MEDIAPIPE_LIBRARY = "mediapipe_c";
+    }
+}