Change Content to ContentWithTargetPath

This appears to be necessary to have library files
included in output directory of a project that has
ImGui.NET as a project reference, instead of as a
Nuget package reference.

src/ImGui.NET/ImGui.NET.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Description>A .NET wrapper for the Dear ImGui library.</Description>
     <AssemblyVersion>1.88.0</AssemblyVersion>
@@ -29,26 +29,36 @@
     </AssemblyAttribute>
   </ItemGroup>
   <ItemGroup>
-    <Content Include="..\..\deps\cimgui\win-x86\cimgui.dll">
-      <PackagePath>runtimes/win-x86/native</PackagePath>
+    <ContentWithTargetPath Include="..\..\deps\cimgui\win-x86\cimgui.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <TargetPath>runtimes/win-x86/native/cimgui.dll</TargetPath>
+      <PackagePath>runtimes/win-x86/native/cimgui.dll</PackagePath>
       <Pack>true</Pack>
-    </Content>
-    <Content Include="..\..\deps\cimgui\win-x64\cimgui.dll">
-      <PackagePath>runtimes/win-x64/native</PackagePath>
+    </ContentWithTargetPath>
+    <ContentWithTargetPath Include="..\..\deps\cimgui\win-x64\cimgui.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <TargetPath>runtimes/win-x64/native/cimgui.dll</TargetPath>
+      <PackagePath>runtimes/win-x64/native/cimgui.dll</PackagePath>
       <Pack>true</Pack>
-    </Content>
-    <Content Include="..\..\deps\cimgui\linux-x64\cimgui.so">
+    </ContentWithTargetPath>
+    <ContentWithTargetPath Include="..\..\deps\cimgui\linux-x64\cimgui.so">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <TargetPath>runtimes/linux-x64/native/libcimgui.so</TargetPath>
       <PackagePath>runtimes/linux-x64/native/libcimgui.so</PackagePath>
       <Pack>true</Pack>
-    </Content>
-    <Content Include="..\..\deps\cimgui\osx\cimgui.dylib">
+    </ContentWithTargetPath>
+    <ContentWithTargetPath Include="..\..\deps\cimgui\osx\cimgui.dylib">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <TargetPath>runtimes/osx/native/libcimgui.dylib</TargetPath>
       <PackagePath>runtimes/osx/native/libcimgui.dylib</PackagePath>
       <Pack>true</Pack>
-    </Content>
-    <Content Include="build\net40\ImGui.NET.targets">
+    </ContentWithTargetPath>
+    <ContentWithTargetPath Include="build\net40\ImGui.NET.targets">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <TargetPath>build/net40/ImGui.NET.targets</TargetPath>
       <PackagePath>build/net40/ImGui.NET.targets</PackagePath>
       <Pack>true</Pack>
-    </Content>
+    </ContentWithTargetPath>
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Generated\" />