PSC-STM-B4: Deployment of PSC Transformer

[tiredpixel]

Instead of a monthly job run on an EC2 instance, this will need to run continuously, so that new records published to the PSC Ingester Stream (Kinesis) are consumed immediately.

Subtasks include:

• Deciding what infrastructure this should run on (eg EC2, Heroku)
• Documenting the deployment process
• Automating with CI/CD if relevant

Estimate: 4 hours

[tiredpixel]

The app has been created on Heroku, and is in a crash loop (intentionally). It will be activated in #255 .