[Doc]: Migrate to Markdown

[rafvasq]

📚 The doc issue

Currently, documentation is written in ReStructuredText which is feature-rich but not as simple and popular as Markdown. This could be a barrier for people who are new to rST but want to contribute documentation.

Suggest a potential alternative/fix

Migrate the current docs to use MyST, a flavour of Markdown extended for use with Sphinx.

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[Isotr0py]

Agreed. If we migrate to markdown, I think we can also get a quick preview of documentation from previewer during writing without massive re-building.

[simon-mo]

I support this!

[DarkLight1337]

+1!