Apply database schema already when connecting

[amotl]

At ¹ and ², we have been using SQLAlchemy's abilities to specify the database schema on the connection string already, using ?schema=foobar. In this way, table names will not need to be addressed in full-qualified notation "by hand". Instead, they can be addressed by using basename only, when selecting the schema at connection time already.

Let's also do it in the same spirit here.

Footnotes

1. https://github.com/crate-workbench/mlflow-cratedb ↩

2. https://github.com/crate-workbench/langchain ↩