Context: https://dev.azure.com/devdiv/DevDiv/_workitems/edit/1009374/
Context: dotnet/android@0342fe5

Localize error and warning messages produced by
`Xamarin.Android.Tools.AndroidSdk.dll`.

We will be following the [.NET Resource Localization pattern][0] and
generating satellite assemblies using [`.resx` files][1], in particular
`src/Xamarin.Android.Tools.AndroidSdk/Properties/Resources.resx`.

`Resources.resx` is an XML file, and will contain `/root/data`
elements in which `//data/@name` will be a semantically meaningful
shorthand for the actual error message, followed by a `_`-separated
list of "parameter names" for the message, if the message has any
format string placeholders.  The `//data/value` will
be the error or warning message:

	<root>
	  <data name="InvalidMonodroidConfigFile_path_message" xml:space="preserve">
	    <value>An exception occurred while reading configuration file '{0}'. Exception: {1}</value>
	    <comment>
	{0} - The path of the file being read.
	{1} - The exception message of the associated exception.
	    </comment>
	  </data>
	</root>

An optional `//data/comment` element may be provided to describe the
meaning within the `//data/value` element to translators.

When using Visual Studio or Visual Studio for Mac, changes to
`Resrouces.resx` will cause `Resources.Designer.cs` to be updated:

	namespace Xamarin.Android.Tools.AndroidSdk.Properties {
	  internal partial class Resources {
	    internal static string InvalidMonodroidConfigFile_path_message {
	      get => …
	    }
	  }
	}

The `Resources` members should be used to obtain all strings for use
in `logger()` calls:

	logger (TraceLevel.Error, string.Format (Resources.InvalidMonodroidConfigFile_path_message, file, ex.Message));

When an MSBuild error or warning code is used with more than one
output string, then a semantically meaningful suffix should be used
to distinguish between the two.

Note that this infrastructure does not interoperate with C#6 string
interpolation.  Any error or warning messages currently using C#6
string interpolation will need to use .NET 1.0-style format strings.

Our translation team doesn't work directly with `.resx` files.
Instead, the translation team works with [XLIFF files][2].
`Resources.resx` is converted into a set of
`src/Xamarin.Android.Build.Tasks/Properties/xlf/Resources.*.xlf`
files via `XliffTasks.targets` from the [dotnet/xliff-tasks][3] repo.
The `Resources.*.xlf` files should be automatically updated whenever
`Resources.resx` is updated.

[0]: https://docs.microsoft.com/dotnet/framework/resources/index
[1]: https://docs.microsoft.com/dotnet/framework/resources/creating-resource-files-for-desktop-apps#resources-in-resx-files
[2]: http://docs.oasis-open.org/xliff/v1.2/os/xliff-core.html
[3]: https://github.com/dotnet/xliff-tasks

Context: https://dl-ssl.google.com/android/repository/repository2-1.xml

Update the preferred Android SDK component versions to the current latest
versions listed in the [Android Repository file][0]:

  * `$(AndroidSdkBuildToolsVersion)`/build-tools to 30.0.2
  * `$(AndroidCommandLineToolsVersion)`/cmdline-tools to 2.1
  * `$(AndroidSdkPlatformToolsVersion)`/platform-tools to 30.0.4
  * `$(AndroidSdkPlatformVersion)`/platform to android-30
  * `$(AndroidNdkVersion)`/NDK to 21.3.6528147

[0]: https://dl-ssl.google.com/android/repository/repository2-1.xml