Implement an HTML Entity Converter

This lab is about converting special characters in a string with their corresponding HTML entities. **Objective**: Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should have a `convertHTML` function that accepts a string as an argument. 1. The `convertHTML` function should return a new string by converting special characters in the argument string to their corresponding HTML entities. - `&` should be converted to `&amp;`. - `<` should be converted to `&lt;`. - `>` should be converted to `&gt;`. - `"` should be converted to `&quot;`. - `'` should be converted to `&apos;`.