Add support for logical data types.

[schuemie]

As described in Adam's post. SQLite doesn't support logical types, so we will stick to the current behavior there (convert to INT and throw a warning). We suspect we will phase out SQLite in favor of DuckDB in OHDSI in the future.

From discussion #275

[ablack3]

One thing I noticed is that executeBatch is very slow on Oracle when there are lots of missing values. I'm not sure why. Just making a note.

[ablack3]

Boolean types seems to be working well on postgres, redshift, sql server. Oracle 19 (test database version) is not though. I can pass logicals to and from oracle but NA values are converted to FALSE. I'm representing them as NUMBER(1) in the database. Still need to investigate Oracle. I think latest version of oracle does have boolean types but not older versions.