Add helper functions ToTupleX to create Tuple

[CorentinClabaut]

It would be useful to have functions ToTupleX to simplify the creation of Tuples.

It would be especially useful to convert the return of a function with multiple values into a single Tuple.

[samber]

Something like:

tuple := lo.T2("foobar", 42)

tuple.A  // "foobar"
tuple.B  // 42

func example() (string, int) {
    return "foobar", 42
}

tuple := lo.T2(example())

tuple.A  // "foobar"
tuple.B  // 42

?

[CorentinClabaut]

Exactly.

I can provide a PR for that.