[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/auction.py, etc.