Move logic from Makefile to Pyhon

[he7d3r]

• The target /data/trades.db could be a single call to some flask script which implements the current logic
• The tests could be written using a proper testing library. For example, consider using great expectations tool.

[he7d3r]

As an example, the structure of https://github.com/vishalsatam/Data-Pipelining/tree/master/Make/MakeDemo looks a lot cleaner