Added tests for different filter types Binary and Numeric

[halio-g]

• Added validation to skip pushdown for Array type columns.
• Added unit test for Datatype Binary and Decimal.

[odeke-em]

Thanks @halio-g! Just one comment but also did we remember to return the col_type in our schema information query?

[halio-g]

Thanks @halio-g! Just one comment but also did we remember to return the col_type in our schema information query?

We only store the json and jsonb in the col_type, so we don't need to modify the schema information query. We need the metadata when converting the Spark SQL to GoogleSql.