Refactor simulator code and Desktop App

My proposal has 3 parts Making a Separate Repository and Refactoring Simulator Code: The first part is refactoring of the simulator code base. For some time now, the CircuitVerse community has wanted to refactor the current javascript codebase (sample GitHub issues: #199, #110, #190). Testing Simulator Code: With bug fixes and new features being implemented by a growing community of circuitverse it will be essential to test Pull Requests before CircuitVerse admins and maintainers merge them. so the second part of my proposal is adding tests to ensure the basic functionality of the simulator. Electron App: CircuitVerse provides a platform to perform simulations on an online simulator that users don’t have to install, is lightweight and has a lot of features but sadly not everyone has unrestricted access to the internet. This can be one of the reasons why CircuitVerse’s maximum traffic is from developed countries with above-average or good internet connectivity like the USA(26%), India(11%), UK(6%) and Canada(4%). It would be a big step towards increasing accessibility to have an offline App. Hence, I propose the third part of my proposal: An offline electron app for CircuitVerse.