Athena driver doesn't support multiple Data Catalogs

Description

The Athena driver only connects to AwsDataCatalog and doesn't support AWS Athena's multi-catalog feature. Athena accounts can have many Data Catalogs (I have 50), but dbcode only shows one.

Expected Behavior

Enumerate all available catalogs using the ListDataCatalogs API

Current Behavior

• Only AwsDataCatalog is shown regardless of configuration
• Setting "database": "Stuff1" in the connection config doesn't switch catalogs - it's ignored or treated as a database name within AwsDataCatalog

AWS CLI showing multiple catalogs exist

$ aws athena list-data-catalogs --profile MyProfile --region us-east-1
{
    "DataCatalogsSummary": [
        {"CatalogName": "AwsDataCatalog", "Type": "GLUE"},
        {"CatalogName": "Stuff1", "Type": "GLUE"},
        {"CatalogName": "Stuff2", "Type": "GLUE"},
        {"CatalogName": "Stuff3", "Type": "GLUE"},
        ... (50 total catalogs)
    ]
}

Suggested Solutions

Option A - Enumerate catalogs

Call ListDataCatalogs and show all catalogs in the tree view as top-level nodes

Option B - User-specified catalog

Add a catalog field to the connection config:

{
  "name": "Analytics-Stuff1",
  "driver": "athena",
  "catalog": "Stuff1",
  ...
}

Option C - Both

Enumerate by default, but allow filtering to a specific catalog

Athena SQL syntax for cross-catalog queries

-- Athena supports catalog.database.table syntax
SELECT * FROM Stuff1.default.my_table;
SELECT * FROM AwsDataCatalog.iceberg.events;