[Feature Request] Retrieve column comments for SQLAlchemy Inspector#get_columns

[Spikhalskiy]

Describe the feature

In SQLAlchemy, Inspector#get_columns() returns a list of ReflectedColumn.
ReflectedColumn has a comment field.

    comment: NotRequired[Optional[str]]
    """comment for the column, if present.
    Only some dialects return this key
    """

Currently, Trino's implementation of SQLAlchemy dialect in trino.sqlalchemy.dialect.TrinoDialect#get_columns returns a dict with keys ['name', 'type','nullable','default'].
It would be great to support returning comments in the dialect to make them available in SQLAlchemy's Inspector.

Describe alternatives you've considered

Currently, we need to run a separate DESCRIBE schema_table query and manually merge the results with those from Inspector#get_columns().

Are you willing to submit PR?

• Yes I am willing to submit a PR!