Refactor of the Validation System for more ease of use in the future.
The project now builds a standalone executable and executes it before
the main project is built or published.
Since it is now a standalone executable we are also able to use .NET
Core features as we are no longer locked to netstandard.

The project currently includes 1 task, LocalesValidationTask, that will
check if the locales.json file has any of the following issues:
The json is invalid.
The json has locales with missing languages.
The json has locales with langauges that are just duplicates of the
en_US field.

If the project is built or published locally it will also fix any
missing languages or duplicate fields.

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Co-authored-by: Evan Husted <gr33m11@gmail.com>
Co-authored-by: Evan Husted <greem@greemdev.net>