Implement BinaryTypeDateTimeSub in type_traits

[birschick-bq]

CHAR_OCTET_LENGTH: The maximum length in bytes of a character or binary data type column. For all other data types, this column returns a NULL.

AC:

• implement BinaryDateTimeSub, SqlTypeDateTimeSub under namespace type_traits
• call the function in ColumnMetadataQuery::GetColumn under case ResultColumn::CHAR_OCTET_LENGTH

https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlcolumns-function?view=sql-server-ver15