🛠️ [TASK] : Create general configuration endpoint

[stevenj]

Summary

Create endpoint to retrieve a json configuration record

Description

The backend will store generalized json records in the "Config" table in the postgresql database.

catalyst-voices/catalyst-gateway/event-db/migrations/V1__config_tables.sql

Line 75 in 89641a5

CREATE TABLE config (

This endpoint will look up that table, and return that record.

The basic structure of the endpoint is this:
GET /config -> 200: JSON

The Key structure of the Config entry in that table is:

"config","","" : <json data>

In addition, if the query is for a known IP address, any json configuration for that IP address is merged with the general json config.
The Key structure of the IP Address, Config entry in that table is::

"config","ipv4","xxx.xxx.xxx.xxx.xxx" : <json data?

The response will be the merged json.

If the config entry does not exist in the DB, do not return an error, just retun an empty json document:

{}