Addition to Node.js

[Satyasn01]

Issue Title

Complete Node.js Notes as per README

Description

The Node.js notes in the repository are currently incomplete. The README file lists several subtopics that have not yet been covered in the notes. This issue aims to track the completion of these missing sections.

Tagging Reviewers

Requesting review from maintainers who can provide guidance and/or permission: @allanoguis

[allanoguis]

go ahead please @Satyasn01 follow the format or if you have better format please let us know. thanks

[Satyasn01]

Sure kindly assign and add the hacktoberfest/hacktoberfest-accepted label to this

[allanoguis]

doing it now dont forget to leave a star if you haven't yet. thanks!