First set of API refactor changes

[mattyweb]

Lot's of work being done:

• Added new materialized views (councils, regions, request_types, service_requests)
• Added FastAPI and Gino
• Added ORM-based routes for new views
• Added CORS
• Added OpenAPI docs
• Added index route to expose legacy services as-is

To try it:

1. Start new server from API directory with python code/run
2. Ensure Test API is running with welcome message at http://localhost:5000/
3. Test API using OpenAPI at http://localhost:5000/docs
4. Run the ReactJS app to make sure frontend works

Status of legacy APIs for services;

• '/'
• '/status/api'
• '/status/sys'
• '/status/db'
• '/servicerequest/
• '/map/clusters'
• '/map/heat'
• '/map/pins'
• '/visualizations'
• '/comparison/frequency'
• '/comparison/timetoclose'
• '/comparison/counts'
• '/open-requests'
• '/feedback'

[mattyweb]

Added routes for all legacy endpoints.
Can't test the /feedback route since I'm lacking the GitHub credentials.
Started some shim routes that use legacy formats but point to new (async) database code.

[mattyweb]

• now starting the FastAPI via python code/run.py
• simplified the Docker base image with one that includes gcc etc. rather than having to install it
• need to make sure that .env file exists in api folder which is used by image (just rename env.example)

postman tests are failing now however. not sure why. need to investigate.

[mattyweb]

compose is working now and setting the proper environment variables

there are 4 postman tests that are still failing:

• 2 are expecting 400 errors whereas the new API sends 422 errors for bad input data
• the other 2 are sending city council districts and that might be causing problems