[5.7] Add whereNotBetween method to Collection

[amaelftah]

this PR adds whereNotBetween to collection object , since we have whenEmpty & whenNotEmpty , whereIn & whereNotIn , i thought that whereNotBetween method should be added to collection object as a convention

$collection = collect([
    ['product' => 'Pencil', 'price' => 30],
    ['product' => 'Chair', 'price' => 80],
    ['product' => 'Door', 'price' => 100],
    ['product' => 'Bookcase', 'price' => 150],
   ['product' => 'Desk', 'price' => 200],
]);

$filtered = $collection->whereNotBetween('price', [100, 200]);

$filtered->all();

/*
    [
        ['product' => 'Bookcase', 'price' => 30],
        ['product' => 'Bookcase', 'price' => 80],
    ]
*/