Create native runtime package

NativeFileDialogs.Net.Runtime/NativeFileDialogs.Net.Runtime.csproj

@@ -0,0 +1,41 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup Label="Project">
+    <TargetFramework>net6.0</TargetFramework>
+    <OutputType>Library</OutputType>
+    <AssemblyTitle>NativeFileDialogs.Net.Runtime</AssemblyTitle>
+    <AssemblyName>NativeFileDialogs.Net.Runtime</AssemblyName>
+  </PropertyGroup>
+
+  <PropertyGroup Label="Nuget">
+    <IsPackable>true</IsPackable>
+    <PackageId>NativeFileDialogs.Net.Runtime</PackageId>
+    <Version>0.1.0-alpha</Version>
+    <Authors>Speykious</Authors>
+    <PackageTags>Native;File;Dialogs;Portal;Gtk</PackageTags>
+    <Title>NativeFileDialogs.Net.Runtime</Title>
+    <Description>Native runtime libraries for NativeFileDialogs.NET</Description>
+    <Copyright>2022 Speykious</Copyright>
+    <PackageProjectUrl>https://github.com/Speykious/NativeFileDialogs.NET</PackageProjectUrl>
+    <PackageLicenseFile>LICENSE</PackageLicenseFile>
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+  </PropertyGroup>
+
+  <ItemGroup Label="Native libraries">
+    <!-- See https://github.com/ppy/osu-framework/blob/master/osu.Framework.NativeLibs/osu.Framework.NativeLibs.csproj. -->
+    <None Include="runtimes\**\*" Pack="true" PackagePath="runtimes" />
+    <None Include="_._">
+      <!-- Means this package doesn't provide any reference assembly to the target framework.
+           nupkg is a zip file and doesn't has concept for folders,
+           so there must be something under the path, otherwise client will consider this package broken.
+           See https://docs.microsoft.com/en-us/nuget/reference/errors-and-warnings/nu5128#scenario-2 . -->
+      <Pack>true</Pack>
+      <PackagePath>lib\$(TargetFramework)</PackagePath>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup Label="Documents">
+    <None Include="..\LICENSE" Pack="true" PackagePath="" />
+  </ItemGroup>
+
+</Project>