EXPERIMENTAL: Metal backend (#441)

This is not a continuation of the Metal backend; this is simply bringing
the branch up to date and merging it as-is behind an experiment.

---------

Co-authored-by: Isaac Marovitz <isaacryu@icloud.com>
Co-authored-by: Samuliak <samuliak77@gmail.com>
Co-authored-by: SamoZ256 <96914946+SamoZ256@users.noreply.github.com>
Co-authored-by: Isaac Marovitz <42140194+IsaacMarovitz@users.noreply.github.com>
Co-authored-by: riperiperi <rhy3756547@hotmail.com>
Co-authored-by: Gabriel A <gab.dark.100@gmail.com>

src/Ryujinx.Graphics.Metal/Ryujinx.Graphics.Metal.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Ryujinx.Common\Ryujinx.Common.csproj" />
+        <ProjectReference Include="..\Ryujinx.Graphics.GAL\Ryujinx.Graphics.GAL.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="SharpMetal" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <EmbeddedResource Include="Shaders\Blit.metal" />
+      <EmbeddedResource Include="Shaders\BlitMs.metal" />
+      <EmbeddedResource Include="Shaders\ChangeBufferStride.metal" />
+      <EmbeddedResource Include="Shaders\ConvertD32S8ToD24S8.metal" />
+      <EmbeddedResource Include="Shaders\ConvertIndexBuffer.metal" />
+      <EmbeddedResource Include="Shaders\ColorClear.metal" />
+      <EmbeddedResource Include="Shaders\DepthStencilClear.metal" />
+      <EmbeddedResource Include="Shaders\DepthBlit.metal" />
+      <EmbeddedResource Include="Shaders\DepthBlitMs.metal" />
+      <EmbeddedResource Include="Shaders\StencilBlit.metal" />
+      <EmbeddedResource Include="Shaders\StencilBlitMs.metal" />
+    </ItemGroup>
+
+</Project>