Exchange docs

[achilleas-kal]

Add Exchange docs (formulas/concepts from Notion)

@albertchon

[gorgos]

@achilleas-kal can be closed?

[achilleas-kal]

Not to my knowledge @gorgos are all our formulas on the docs somewhere?

[achilleas-kal]

Also when we do add them do u think it's best to do so on the API docs or chain docs? I think it makes more sense for chain docs - @gorgos ?

[gorgos]

A lot of formulas are already spread across the current docs, but having one overview page could be good. Not sure about API docs vs chain docs, because it kind of makes sense in both places. Maybe API docs can have a section with just a link to the chain docs, so we don't have duplication.