Combine REST-API endpoint files

[Laberbear]

The endpoint folder of the REST-API has a file for every endpoint. This currently aggregates to 62 Python files in that directory.
While it is advised in the PEP8 coding standard to have one class per file and name the file accordingly, I think this greatly decreases the ability to comprehend the backend structure and editability of the REST-API.

https://github.com/OpServ-Monitoring/opserv-backend/tree/master/app/server/restful_api/data/v1/endpoints

Unless there are serious issues with combining (atleast the components) into bigger Python files, I suggest we do just that.