Use Python based Server Gateway Interface

[webb-ben]

User story

As an NLDI Admin, I want to support Flask-WSGI or Starlette-ASGI so that the NLDI server is able to efficiently transmit large amounts of data.

Acceptance criteria

• [ ] Streaming responses directly from SQL Result
• [ ] Streamed responses outperform traditional response

Definition of done

• [ ] unit/functional tests added/updated
• [ ] documentation updated