Allow for basic SQL queries as Rule Check logic (before SQL refactor)

[gerrycampion]

• Add a new rule type "SQL"
• engine will do preprocessing to assign record numbers to the dataset frames for reporting
• we can make use of duckdb.query, which allows sql queries on pandas dataframe variables. (This will change in the future after the sql refactor).
• the reporting functionality will use the generated record numbers and other columns to populate the report
• Add documentation for the new rule type
• Check property will allow a SQL select query that returns the records that violate the rule. This will replace the business rules engine process of using a list of booleans.
• Scope will remain the same in terms of selecting datasets within scope, (unlike with jsonata)
• We will want to support only ANSII sql to make future compatible with other flavors of sql

[SFJohnson24]

https://stackoverflow.com/questions/45865608/executing-an-sql-query-on-a-pandas-dataset