✨ Introduce BSON field type

[joocer]

trafficstars

record in Parquet, etc, as BLOB, but parse to dictionary-like field field

implement optimizations for the existing ->, ->> and @? operators

implement functions:

• [ ] SELECT EXTRACT_PATH(bson_field, 'address.city') FROM my_table;
• [ ] SELECT CAST(bson_field->'age' AS INTEGER) FROM my_table;
• [ ] SELECT FILTER(bson_field->'orders', 'order.amount > 100') FROM my_table;

This is a virtual type only, it's binary blob on storage.

This would be tarchia defined tables only.