Add 'include' and 'excludeKey' to user endpoints

[JTPenn-EG]

New Feature / Enhancement Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.

Current Limitation

Some user endpoints like login/signup and retrieving current user ("users/me") do not support basic query parameters such as 'include' and 'excludeKey'.
For example https://parseserver.com/parse/users/me?include=className would return the same response exactly as https://parseserver.com/parse/users/me
I believe this behavior also happens in the login/signup endpoints.

Feature / Enhancement Description

Add support for these keys in these endpoints.

Example Use Case

You may have a user that has a pointer to some class and you want to retrieve that pointer's field data along with the user..

Alternatives / Workarounds

There are none

3rd Party References

-

[parse-github-assistant]

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[dblythy]

Related: #288 #4845