Check that tables are valid before runnig #35
Description
Is your feature request related to a problem?
We need to check tables structure before starting to work with them. It will clarify cases like #34
Describe the solution you'd like
Need to implement check function and call it before borker/result_backend/scheduler start
Describe alternatives you've considered
No response
Which component would this affect?
PostgreSQL Broker
Use case
Additional context
No response