A new JuMPTutorials.jl package

I am Arpit, a GSoC student working under @chriscoey, @joaquimg and Lea Kapelevich to create a new JuMPTutorials.jl package, which will contain tidied, updated, and more-consistent versions of many of the notebooks in the old juliaopt-notebooks repo. Can we please get some feedback on our progress so far? Feel free to create issues on the GitHub repo for suggested changes or additions. The current link to the repo is - https://github.com/barpit20/JuMPTutorials.jl (and later we plan to move the repo to a more official location).