Implement the Mutations Algorithm

**Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. Create a function named `mutation` that takes an array as its argument. 1. `mutation` should return `true` if the string in the first element of the array contains all of the letters of the string in the second element of the array, and `false` otherwise. For example: - `mutation(["hello", "Hello"])`, should return `true` because all of the letters in the second string are present in the first, ignoring case. - `mutation(["hello", "hey"])` should return `false` because the string `hello` does not contain a `y`. - `mutation(["Alien", "line"])`, should return `true` because all of the letters in `line` are present in `Alien`.