Prepare github action

Author: usercode

.github/workflows/dotnetcore.yml

@@ -0,0 +1,24 @@
+name: .NET Core
+
+on: 
+  release:
+    types:
+      - published
+
+jobs:
+  ImageEffects:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 5.0.x
+    - name: Build with dotnet
+      run: dotnet build --configuration Release "./src/WPF.ImageEffects.Demo.sln"    
+    - name: Create the package
+      run: dotnet pack --configuration Release "./src/WPF.ImageEffects.Demo.sln"
+    - name: Publish "WPF.ImageEffects" to nuget
+      run: dotnet nuget push "./src/WPF.ImageEffects/bin/Release/*.nupkg" -s "https://api.nuget.org/v3/index.json" -k ${{secrets.NUGET_API_KEY}}

src/WPF.ImageEffects/WPF.ImageEffects.csproj

@@ -1,15 +1,34 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>    
-    <TargetFramework>net5.0-windows</TargetFramework>    
+    <TargetFramework>net5.0-windows</TargetFramework>
+    <Authors>usercode</Authors>
+    <PackageProjectUrl>https://github.com/usercode/WPF.ImageEffects</PackageProjectUrl>
+    <Description>GPU-based image effects (brightness, contrast) for WPF</Description>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <RootNamespace>WPF.ImageEffects</RootNamespace>
     <AssemblyName>WPF.ImageEffects</AssemblyName>
     <UseWPF>true</UseWPF>
+    <Version>1.5.0</Version>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <PackageIcon>usercode.png</PackageIcon>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
+  
+  <ItemGroup>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
+  </ItemGroup>
+  
   <ItemGroup>
     <Content Include="Shaders\ImageShader.fx" />
   </ItemGroup>
+  
   <ItemGroup>
     <Resource Include="Shaders\ImageShader.fxc" />
   </ItemGroup>
+
+  <ItemGroup>
+    <None Include="..\usercode.png" Pack="true" PackagePath="" />
+  </ItemGroup>
 </Project>