[Code Improvement] Central Error Handling for Backend

[Zamion101]

Feature description

Adding central error handling logic using custom error class and middlewares.

Why would it be useful?

At the moment Backend does not have a central error handling logic. Which is really important for a healthy production builds, maintaining consistent error messages/logging/tracing and easy to debug while developing. Even though Sentry will be the dominant error capture mechanism in the production build, with this feature new Contributors won't need to setup Sentry Account for capturing errors on the fly.

[Zamion101]

Update 22.12.2022 01:02 GMT+1:
Draft PR opened #152.