Added support for CREATE DYNAMIC TABLE in Snowflake:

1. Extended CreateTableBuilder with new options
2. Removed the CreateTableBuilder::validate_schema_info function and related tests because, in my opinion, it introduces semantic validation, which is out of scope for the parser.
3. As so many options exist for creating tables, we should evaluate whether specifying them explicitly is robust enough, or a generic parsing of options is a better alternative. Food for thought.