New `POST` create entity endpoint - also authentication #227

Job	Run time
Docker (development)	1m 29s
pytest (3.10)	33s
Docker (production)	1m 19s
pytest (3.11)	29s
pytest (3.12)	29s
External / Build distribution package	16s
External / Run `pre-commit`	52s
External / Run `pylint` & `safety`	26s
External / Build Documentation	0s
	5m 53s

Provide feedback