Add snupkg and Continuous Integration Build

Author: ScarletKuro

src/MudBlazor.ThemeManager/MudBlazor.ThemeManager.csproj

@@ -28,6 +28,17 @@
     <PackageIcon>Nuget.png</PackageIcon>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
+  
+  <PropertyGroup>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
+  </PropertyGroup>
+  
+  <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
+    <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
+  </PropertyGroup>
 
   <ItemGroup>
     <None Include="..\..\content\$(PackageIcon)">