Use Task for validation

locales validation is now a MSBuild task instead and will run as part of the build process. The emulator will still need to be ran once to fix locales/langauges after a new addition, but will no longer crash

src/Ryujinx.BuildValidationTasks/Ryujinx.BuildValidationTasks.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Build.Utilities.Core" />
+    <PackageReference Include="Newtonsoft.Json" />
+  </ItemGroup>
+
+</Project>