Update sample to be able use NativeAOT

rd.xml file is workaround to SharpDx limitations.

Author: kant2002

src/ImGui.NET.SampleProgram/ImGui.NET.SampleProgram.csproj

@@ -2,8 +2,9 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <PublishAot>true</PublishAot>
   </PropertyGroup>
 
   <ItemGroup>
@@ -12,6 +13,10 @@
     <PackageReference Include="Veldrid.StartupUtilities" Version="4.8.0" />
     <ProjectReference Include="..\ImPlot.NET\ImPlot.NET.csproj" />
   </ItemGroup>
+  
+  <ItemGroup>
+    <RdXmlFile Include="rd.xml" />
+  </ItemGroup>
 
   <ItemGroup>
     <EmbeddedResource Include="Shaders/GLSL/imgui-vertex.glsl" LogicalName="imgui-vertex.glsl" />

src/ImGui.NET.SampleProgram/rd.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<Directives>
+  <Application>
+    <Assembly Name="SharpDX.DXGI" Dynamic="Required All">
+      <Type Name="SharpDX.DXGI.Factory" Dynamic="Required All" />
+    </Assembly>
+    <Assembly Name="SharpDX.Direct3D11" Dynamic="Required All">
+      <Type Name="SharpDX.Direct3D11.Texture2D" Dynamic="Required All" />
+    </Assembly>
+  </Application>
+</Directives>