Improve Snowflake Connector

[jojoduquartier]

It might be better to have a nested format for the snowflake connector. It is possible to have multiple databases in the same region/warehouse etc.

{
    "snowflake": {
        account: {  # here we have the actual ***.us-east-2.***
            warehouse: {  # the warehouse
                database1: {},
                database2: {},
                ...
            }
        }
    }
}