In this challenge, you must create a function that, given a list of numbers (example [1, 3, 6, 43, 6]), calculate, recursively, how many elements are in the list and return that value.
For example, we have the following input e expected output for the function that receves the list:
iex> ListLength.call([1, 2, 3, 5, 7])
...> 5💜 Thanks to Rocketseat 👋