Investigate ODBC/Snowflake enterprise database connections

[georgestagg]

This might include creating a tiered system where data is pulled from the database into an in-memory duckdb session and then worked on locally for stat calculations etc.

[georgestagg]

This might include creating a tiered system where data is pulled from the database into an in-memory duckdb session and then worked on locally for stat calculations etc.

As mentioned by @cpsievert we probably don't actually want to do a tiered system like this, because some users might want to use database specific features like Semantic Views deep in their ggsql queries.