Add bc7enc16 encored for BC7 textures compression on Linux

Source/ThirdParty/bc7enc16/bc7enc16.Build.cs

@@ -0,0 +1,21 @@
+// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
+
+using Flax.Build;
+
+/// <summary>
+/// https://github.com/richgel999/bc7enc16
+/// </summary>
+public class bc7enc16 : ThirdPartyModule
+{
+    /// <inheritdoc />
+    public override void Init()
+    {
+        base.Init();
+
+        LicenseType = LicenseTypes.MIT;
+        LicenseFilePath = "LICENSE";
+
+        // Merge third-party modules into engine binary
+        BinaryModuleName = "FlaxEngine";
+    }
+}