Fix scaling in Kerr-Newman electrodynamics part

🐞 Problem Currently, for correct calculation of trajectory in Kerr-Newman space-time, q(charge on test particle) or Q(charge on massive body) needs to be multiplied by 11604461683.91822052001953125 for correct calculation. It is not known from where this factor arises.

🎯 Goal

• Find out the reason for this problem
• Fix it.

💡 Possible solutions

• The code is written with reference from https://en.wikipedia.org/wiki/Kerr–Newman_metric
• These might also help
  • https://arxiv.org/pdf/gr-qc/0409025.pdf
  • https://arxiv.org/abs/gr-qc/0409025

📋 Steps to solve the problem

• Comment below about what you’ve started working on.
• Add, commit, push your changes
• Submit a pull request and add this in comments - Addresses #144>
• Ask for a review in comments section of pull request
• Celebrate your contribution to this project 🎉

[ritzvik]

I guessed geometric units were the reason, still needed to clarify. The presence of the rogue factor 1e-7 is duly noted.

[JeS24]

~Using Charge per unit Mass (q) here, instead of charge, Q, is probably where the factor comes from. Although, this should be moot now, after #512 . Tests are needed regardless.~ There seems to be an implementation issue in the geodesic equations for KerrNewman, We need to check the equations once, before proceeding. I am skipping this test for now in #512.