[new]: `array_intersect(arr1, arr2)`

[shivam221098]

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Edit the title above with self-explanatory function name and argument names

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BigFunction Description as it would appear in the documentation

the function array_intersect returns the intersection of two arrays.

Examples of (arguments, expected output) as they would appear in the documentation

array_intersect([1, 2, 3], [2, 6, 7]) -> [2]