C#: Generate symbols packages

modules/mono/Directory.Build.targets

@@ -2,6 +2,8 @@
   <PropertyGroup>
     <_HasNuGetPackage Condition=" '$(_HasNuGetPackage)' == '' And '$(PackageId)' != '' And '$(GeneratePackageOnBuild.ToLower())' == 'true' ">true</_HasNuGetPackage>
     <_HasNuGetPackage Condition=" '$(_HasNuGetPackage)' == '' ">false</_HasNuGetPackage>
+    <_HasSymbolsNuGetPackage Condition=" '$(_HasSymbolsNuGetPackage)' == '' And '$(PackageId)' != '' And '$(IncludeSymbols.ToLower())' == 'true' And '$(SymbolPackageFormat)' == 'snupkg' ">true</_HasSymbolsNuGetPackage>
+    <_HasSymbolsNuGetPackage Condition=" '$(_HasSymbolsNuGetPackage)' == '' ">false</_HasSymbolsNuGetPackage>
   </PropertyGroup>
   <Target Name="CopyNupkgToSConsOutputDir" AfterTargets="Pack"
     Condition=" '$(_HasNuGetPackage)' == 'true' ">
@@ -10,13 +12,15 @@
       <GodotOutputDataDir>$(GodotSourceRootPath)\bin\GodotSharp\</GodotOutputDataDir>
     </PropertyGroup>
     <Copy SourceFiles="$(PackageOutputPath)$(PackageId).$(PackageVersion).nupkg" DestinationFolder="$(GodotOutputDataDir)Tools\nupkgs\" />
+    <Copy Condition=" '$(_HasSymbolsNuGetPackage)' == 'true' " SourceFiles="$(PackageOutputPath)$(PackageId).$(PackageVersion).snupkg" DestinationFolder="$(GodotOutputDataDir)Tools\nupkgs\" />
   </Target>
   <Target Name="PushNuGetPackagesToLocalSource" BeforeTargets="Pack"
     Condition=" '$(_HasNuGetPackage)' == 'true' And '$(PushNuGetToLocalSource)' != '' ">
     <Copy SourceFiles="$(PackageOutputPath)$(PackageId).$(PackageVersion).nupkg" DestinationFolder="$(PushNuGetToLocalSource)\" />
+    <Copy Condition=" '$(_HasSymbolsNuGetPackage)' == 'true' " SourceFiles="$(PackageOutputPath)$(PackageId).$(PackageVersion).snupkg" DestinationFolder="$(PushNuGetToLocalSource)\" />
   </Target>
   <Target Name="ClearNuGetLocalPackageCache" BeforeTargets="Pack"
     Condition=" '$(_HasNuGetPackage)' == 'true' And '$(ClearNuGetLocalCache.ToLower())' == 'true' ">
-    <RemoveDir Directories="$(NugetPackageRoot)/$(PackageId.ToLower())/$(PackageVersion)"/>
+    <RemoveDir Directories="$(NugetPackageRoot)/$(PackageId.ToLower())/$(PackageVersion)" />
   </Target>
 </Project>

modules/mono/glue/GodotSharp/GodotSharp/GodotSharp.csproj

@@ -27,6 +27,8 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
 
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
   <ItemGroup>
     <!-- SdkPackageVersions.props for easy access -->

modules/mono/glue/GodotSharp/GodotSharpEditor/GodotSharpEditor.csproj

@@ -22,6 +22,8 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
 
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
   <PropertyGroup>
     <DefineConstants>$(DefineConstants);GODOT</DefineConstants>