Snowflake create database

[osipovartem]

https://docs.snowflake.com/en/sql-reference/sql/create-database
Added support for

CREATE [ OR REPLACE ] [ TRANSIENT ] DATABASE [ IF NOT EXISTS ] <name>
   [ CLONE <source_schema>
       [ { AT | BEFORE } ( { TIMESTAMP => <timestamp> | OFFSET => <time_difference> | STATEMENT => <id> } ) ]
       [ IGNORE TABLES WITH INSUFFICIENT DATA RETENTION ]
       [ IGNORE HYBRID TABLES ] ]
   [ DATA_RETENTION_TIME_IN_DAYS = <integer> ]
   [ MAX_DATA_EXTENSION_TIME_IN_DAYS = <integer> ]
   [ EXTERNAL_VOLUME = <external_volume_name> ]
   [ CATALOG = <catalog_integration_name> ]
   [ REPLACE_INVALID_CHARACTERS = { TRUE | FALSE } ]
   [ DEFAULT_DDL_COLLATION = '<collation_specification>' ]
   [ STORAGE_SERIALIZATION_POLICY = { COMPATIBLE | OPTIMIZED } ]
   [ COMMENT = '<string_literal>' ]
   [ CATALOG_SYNC = '<snowflake_open_catalog_integration_name>' ]
   [ CATALOG_SYNC_NAMESPACE_MODE = { NEST | FLATTEN } ]
   [ CATALOG_SYNC_NAMESPACE_FLATTEN_DELIMITER = '<string_literal>' ]
   [ [ WITH ] TAG ( <tag_name> = '<tag_value>' [ , <tag_name> = '<tag_value>' , ... ] ) ]
   [ WITH CONTACT ( <purpose> = <contact_name> [ , <purpose> = <contact_name> ... ] ) ]

Related to Embucket/embucket#510

[Vedin]

lgtm overall! Just a question about do we want to support everything create database related or we fine with this state for now