3rd party module disclaimer

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest version of Parse Server.

Issue Description

The docs list email adapters for Parse Server maintained by 3rd parties. The Parse Platform has no control over their security and fitness for use. For example, for parse-server-mailgun has last been published 2 years ago and has several unmaintained dependencies.

Especially for new developers who just add the dependency to Parse Server, this may not be an obvious issue. They may not even be aware that these modules are not provided by and scrutinized as part of the Parse Platform product suite.

Suggestion

Clearly mark references to 3rd party repos and add a disclaimer.

Start with the Parse Server documentation at the Email Verification and Password Reset section linked in the issue, and review how the parse-server-mailgun and other third-party adapters are referenced. Mark third-party repositories clearly and add a disclaimer explaining that Parse Platform does not control their security or maintenance; the documentation should make this distinction obvious to new developers.