Add online editor in C++ course and Bootstrap

[Arpit Jain]

Description

[github-actions]

Hello there!👋, @arpit456jain Welcome to the CodingEasy! 🚀⚡Thank you and Congratulations🎉 for opening a issue in this project. Please make sure not to start working on this issue, unless you are assigned to it.😄

[Jayanth MKV]

assign @arpit456jain @KKhushhalR2405 @singhmansi25

[Arpit Jain]

ok @Jayanth-MKV make a PR for adding it in bootstrap