Convert this project into a node module

[djeanner]

Ideally, the main html page https://github.com/NMReDATAInitiative/J-graph/blob/main/html/chart_example_from_d3-graph-gallery_zoom.html should be split into a simple spectrum displayer and all the J-graph stuff into a separate file or separate module ?

[djeanner]

The spectrum displayer should just read the nmredata.sdf file, and display the molecules (j-mol), the spectrum saved locally.