Add SymbolMap file to the project in order to make IL2CPP stack traces not be messed up.

bin/UWP_IL2CPP_WithCSharpProject_Example/UWP_IL2CPP_WithCSharpProject_Example_CSharpProject.csproj

@@ -180,6 +180,8 @@
     </Compile>
     <Content Include="Properties\Default.rd.xml">
     </Content>
+    <Content Include="$(SolutionDir)\build\bin\$(Platform)\$(Configuration)\SymbolMap">
+    </Content>
     <Content Include="Data\**">
       <ExcludeFromResourceIndex>true</ExcludeFromResourceIndex>
     </Content>

bin/UWP_IL2CPP_WithCSharpProject_Example/UWP_IL2CPP_WithCSharpProject_Example_CSharpProject.csproj.user

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <DeviceId>30F105C9-681E-420b-A277-7C086EAD8A4E</DeviceId>
+    <UseEmulator>true</UseEmulator>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <EnableUnmanagedDebugging>true</EnableUnmanagedDebugging>
+  </PropertyGroup>
+</Project>