User Classification module documentation

[Karuna-Mendix]

https://mendix.atlassian.net/wiki/spaces/idx/pages/3795321043/User+Classification
Inputs from Jaap: https://mendix.atlassian.net/wiki/spaces/idx/pages/3650683342/Documentation+-+User+Classification+module+DRAFT

[JaapF]

I think this page needs a little bit more attention/love/rework.

What is important for customers to get clarity on the following options:

• userrole based (this is supported by User Classification)
• IdP-based user classification (this is described in current section 3.)
• custom (this is supported by user Classification module, or can be done as per old situation and which is described in section 4.

I think the ToC of this page should follow these options. That gives more an outside-in view - what is the logic I want to apply.
I'll send you a link to slide that explains how customers can choose from these options - it includes a decision tree.

[JaapF]

Maybe for clarity this page should also say something about the deprecated method:

"Previously another method was supported: based on email address persisted in a custom user entity. This method involved the USAGE_METRICS_EMAIL_FIELDS as decribed here/link. This method is deprecated." (DRAFT)

[Karuna-Mendix]

I think this rework needs another separate PR. It should not hold the release of the User Classification module. I will create a separate PR for it.