Add DAPR and use Postgressql for underlying DB

[timrobertsusa]

Things we spoke about doing

[MSFTJim]

I like the idea of DAPR. Why did you choose PostgesSQL? I'm not saying no to it, just curious why vs. others?

[MSFTJim]

For more info, dapr bindings are the building block we need for this use case. Here are two links that might be helpful.

• https://docs.dapr.io/developing-applications/building-blocks/bindings/bindings-overview/
• https://github.com/dapr/components-contrib/tree/master/bindings