Let user escape special characters

[YalesRios]

Let user be able to use a character such as the backslash () to escape special characters such as $,{, and } so that they can use it in the question without triggering any functions in fileReader

[YalesRios]

There is a possibility we won't be able to use backslash() since it is already an escape character in Python strings. Might be useful to think of potential suitable substitutes