Range/ClosedRange input support for NonEmpty initializer

[acosmicflamingo]

It looks like if I were to pass a NonEmptyArray an input of type Range or ClosedRange, NonEmptyArray actually produces an array comprising a single element, which is that range itself, instead of an array comprising the numbers within the range:

// Succeeds
func testArrayRange() {
  let input = 0...2
  let fooList: [String] = Array(input).map {
    "\($0)"
  }
  XCTAssertEqual(fooList, ["0", "1", "2"])
}

// Fails
func testNonEmptyArrayRange() {
  let input = 0...2
  let fooList: [String] = NonEmptyArray(input).map {
    "\($0)"
  }
  XCTAssertEqual(fooList, ["0", "1", "2"])
}

I tried creating a fix myself so I could just create a PR and save you all time, but I'm struggling to get a way to generate the expanded array and map that to an existing NonEmpty convenience initializer. Maybe I'm the only one in the world to try and use NonEmptyArray in this manner and it's not worth the effort ;)