documentation proposal

[LegionAtol]

Hi @CarloLucibello ,
I'm new to GraphNeuralNetowrk.jl and I'd like to bring my contribution to the world of GNNs and julia:)
For a few days I've been working on a quick-start guide which presents the theoretical basis of GNNs with code snippets using GraphNeuralNetowrk.jl
If you consider it useful, I would like to continue with the creation, I leave the link of the draft (to be refined and continued obviously) to give you an idea of how it could turn out: https://github.com/LegionAtol/LegionAtol/blob/6066dd60064331d5c174685d547e065cd14743dd/GNN.pdf

Thanks

[CarloLucibello]

Hi,
we surely need more well-written documentation, tutorials, and examples. If you plan to create a self-consistent document and host it somewhere, I would be very happy to add a link to it from this repo's docs.

If you want to integrate more organically into the existing documentation instead,
we can think about the best way to move forward. Ideally, the documentation should
be organized according to the documentation system, although we currently do not strictly adhere to this standard.

[CarloLucibello]

closing since things didn't move on. Feel free to reopen if needed.