Automation for Azure deployment

[alfredodeza]

Requires issue #7 to be complete !

Create a GitHub Action to automate the process of deploying this application to Azure Web Apps using a containerized workflow. This process will require setting up a container registry on Azure and creating an Azure Service Principal that has enough permissions for the deployment to initiate from the GitHub Action.

The Service Principal process creates a JSON blob that needs to be stored as a secret to be used within the GitHub Action.