New filter system with new filters, including usage of trades table in SQL database to limit daily trade activity

[nikhilsaraf]

related to issue #194

Desired Behavior

I want to limit the total trades that my bot performs using the trades table introduced in #194

Impact

The desired behavior will allow me to have finer-grained risk controls to ensure that we don't overtrade a given market based on anomalous market behavior

Feature Suggestion

We can achieve the desired behavior by querying the sql database before placing trades, if enabled

Specifications

• refactor filter system to be more composable
• daily volume filter by pulling from sql db (ref Write trades into a sql database #194)
• min and max price filter
• neat interface for filters using string patterns with delimiters
• filters should also operate on existing offers which may not pass filter and produce corresponding delete offers accordingly
• restrict to a one-sided strategy for now with the possibility of making a composed version of these filters so they are easier to write along with hint in log lines when config is invalid