[FEATURE] Integrate PyLint with the ACE editor for syntax checking

Hello! @codingkatty I think in the code editor we need to add error highlighting (syntax checking) feature which can help the learners to code smoothly and understand syntax errors.

I have previously worked on auto-completion feature in this project and can add the **error highlighting** feature by integrating PyLint with the ACE editor.
can you please assign me this issue?
