native_python: Use a password hash instead of a clear text password

[fusion44]

Right now the api reads the clear text password from the environment. Change thid to use a precomputed hashed password instead.

https://github.com/fusion44/blitz_api/blob/11f8d57f4e51a0c84b6c197c6c2ef7eadfe4768f/app/system/impl/native_python.py#L67

[thejamesgore]

Thought I would give this a crack as was implemented something similar using bcrypt in one of my projects