Added the getTitle and getDescription Functions in FieldsExtractorEngine Class

[real-Vansh-Khare]

The getTitle function extracts the title of a given question DOM node. The getDescription function extracts the description of a given question DOM node based on the DOM tree. These functions seem to work for all types of questions.

[rootCircle]

Your code also catches the extra * for fields that are mandatory, its purpose serves no part of question and can poison the question itself.

Can you fix that?

[rootCircle]

Did some changes, now getDescription() return null rather than err string to remove ambiguity Rest good

[rootCircle]

Congratulations for your first PR in this repo! Merging now