Add longPathAware manifest and app.config (#1265)

src/SonarScanner.MSBuild/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <runtime>
+    <AppContextSwitchOverrides value="Switch.System.IO.UseLegacyPathHandling=false;Switch.System.IO.BlockLongPaths=false" />
+  </runtime>
+</configuration>

src/SonarScanner.MSBuild/SonarScanner.MSBuild.csproj

@@ -4,6 +4,7 @@
     <AssemblyName>SonarScanner.MSBuild</AssemblyName>
     <OutputType>Exe</OutputType>
     <RollForward>LatestMajor</RollForward>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|netcoreapp2.0|AnyCPU'">
     <WarningLevel>5</WarningLevel>

src/SonarScanner.MSBuild/app.manifest

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="MyApplication.app"/>
+   <!-- Makes the application long-path aware. See https://docs.microsoft.com/windows/win32/fileio/maximum-file-path-limitation -->
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <longPathAware xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</longPathAware>
+    </windowsSettings>
+  </application>
+
+</assembly>