Unable to parse 'max' for optional precision column with MS Sql dialect

[TylerBrinks]

The following is a valid MS Sql query, but cannot ne parsed due to the varbinary implementation.

Variable character-based columns, nvarchar and varchar, use a union type CharacterLength type that allows for either IntegerLength or Max values. The varbinary implementation needs a similar union, such as BinaryLength (reusing CharacterLength seems to have a naming mismatch).

#[test]
fn parse_ms_sql_varbinary_max(){
    let sql = "CREATE TABLE example(VarBinaryMaxCol varbinary(max) not null);";
    let parsed = ms().parse_sql_statements(sql);
    
    assert!(parsed.is_ok());
}