Implement the INTERSECT operator.

intersect $($relation$\_$one, relation$\_$two$)$

Performs intersection on two relations

Parameters:

relation$\_$one: Table Object, one relation for intersect

relation$\_$two: Table Object, the other relation for intersect

Returns:

Table Object, the intersection of the two relations

Make sure both relations share the same attributes. Otherwise, print error message "relation$\_$one and relation$\_$two does not have same schema!" and return None.

Intersect operator function should return distinct records.

DO NOT use pandas methods to construct operator function. You can use:

python's list$/$dictionary manipulation

the utility functions provided above

other relational operators implemented in this notebook