User docs for Microsoft 365 client IDs

According to @jbrummer in #306 (closed):

Everyone who want's to make use of Microsoft 365 needs a client id, so everyone needs to go through the process of registering a client id.

each client (id) has specific permissions / scopes which needs to be set. We need at least those scopes set/enabled that we as goa expect. Otherwise an account cannot be linked.

This may require that the Microsoft 365 setup dialog links to or includes some documentation. The first step in figuring out the design for this is to establish what information these docs need to include - if it's just a few short lines then maybe it could go in the dialog itself, for example. It would also be good to know whether the docs may change according to the goa version.

@jbrummer are you able to provide the basic information that these docs need to provide?