Guidelines for authors

[jchiquet]

Enhance the documentation by completing the following tasks

• Add guidelines for handling dependencies in Julia
• Explain that it is possible to use multiple languages provided that we use the knitr engine.
• Add a TL;DR section with the main points/commands at the beginning of the document
• Should we recommend to use pak instead of remotes for package installation? recent version of renv natively support installation of non-CRAN package
• (for R users) recommend using R >= 4.5.1 for a seamless workflow with renv

[astamm]

@jchiquet I have some time I can spend to make progress on this. I am no expert in Julia but can try out the existing Julia guidelines to check if they are up to date. I can also contribute for the second item. Anything else needed? A global reading to check if everything is explained well enough?

I also wrote a section about git with more details for git newbies. Should I add it?

[astamm]

We also talked about hiding the content of build.yml since it adds content with no relevance for future contributors.