Using LaTex / HTML for assignment labels ?

In NMR you would like to see sometimes assignment like H₁ or H_arom but currently the assignment is a simple text and such formatting is impossible.

If we would like to go in this direction we could:

- allow rich text editor
- advantage: the formatting can easily be copied / paste even in google docs
- disadvantage: we store something pretty verbose in the database / .nmrium file

- allow the assignment to be written in LaTex
- advantage: simple text in the database
- disadvantages:
- not obvious to have support during exportation but the fallback is a simple text
- complex syntax ? (could have an editor if really, really necessary)


There is a library that could easily convert LaTex to MathML: https://temml.org/docs/en/administration#top (but it takes 160kb)