feat(platform-tests): Add 3rd-party platform testing to the release pipeline

[adambollen]

Description

This PR adds support for validating the .NET driver in Azure Functions to ensure that a release build doesn't break one of the most popular 3rd-party platform that .NET customers would likely use for serverless functions.

The pipeline references a private repo, fauna/testtools, which just contains a simple Hello World app and the script collateral needed to publish the Azure Function app.

Motivation and context

BT-4442

How was the change tested?

Tested the setup scripts, test case, and Dockerfile build locally against real Azure; the image build part of the pipeline may require some iteration.

Screenshots (if appropriate):

Change types

• • Bug fix (non-breaking change that fixes an issue)
• • New feature (non-breaking change that adds functionality)
• • Breaking change (backwards-incompatible fix or feature)

Checklist:

• • My code follows the code style of this project.
• • My change requires a change to Fauna documentation.
• • My change requires a change to the README, and I have updated it accordingly.

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[pnwpedro]

Nice, one question tho.