[FEATURE] Create test for db auction

# Changelog:
Add a part of test (test of DB auction)
# Motivation:
I developed an one auction 10 years ago. I want to share the experience.
# Usage guide:
Code for creating the table can be used in node/setup_db.py
# Roadmap:
* test_auction.py (DB,node/auction,FrontEnd api,protocol, etc.),
* DB(node/setup_db.py), 
* node/auction.py, 
* etc.

@gubatron I'd already removed the rose-colored glasses. Think for example what percentage of Trojans are contain modern networks. And think about the prospect of communicating with such customers (Trojan horse) in your store. As you have lost all the money, or on the way to it?