docs(clients): add ACL section to code doc

[millotp]

🧭 What and Why

As suggested by @morganleroi and @shortcuts, we can add the required ACLs to the clients doc, above each function.
We can't do that by simply adding it to the {{notes}} because each language has it's own way to handle multiline comments.

I didn't do java for now, because the javadoc is messed up, will do it in another PR

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[morganleroi]

Huuuuuuge

[shortcuts]

so nice

[Fluf22]

I'm not sure that's the best option for Swift, because it removes a useful short description for some operations.
But this can be looked at later!