Make EventList.read work on Fermi/GBM data

[dhuppenkothen]

... because I don't want to load the fits files by hand, so this would be really handy. I will try to make this work.

[mohamedmostafadawood]

Hello!
I would like to work on this.
What do you think is the best approach for this issue?

[Ayushag1]

Hii I want to take up this issue. What should the good approach be, I need some guidance.
Thanks

[ranjan2829]

@dhuppenkothen PR done for this!

[pupperemeritus]

I would like to work on this. It would be really helpful if I could have a list of the different kinds of data products which are required to be worked upon as there seem to be many different kinds of data products on the NASA Fermi website(https://fermi.gsfc.nasa.gov/ssc/data/access/).