Add Create Action

[eliasm307]

Since the actions section has "compose" for creating something new from existing data, I think a "create" action should also be added to accommodate creating something from nothing, or something that might not be a direct composition of the inputs e.g. Factory methods. Since only "compose" is included the guide could be misleading as it sounds like compose should be used for all creation actions.

A practical example could be a static factory method for a class e.g.

await Resource.create(config)

I don't thing compose makes sense in such a case.