[Modules] Developer Certificate of Origin (DCO)

[Xavier D. <xav...@gm...>]

Dear All,

In order to ensure that all contributions are properly authorized and
in compliance with licensing requirements, We now apply the Developer
Certificate of Origin (DCO) process.

The DCO is a lightweight mechanism to certify that you, as a
contributor, have the right to submit your code and agree to the
project’s licensing terms.

Guidelines have been added to the CONTRIBUTING document:
https://modules.readthedocs.io/en/latest/CONTRIBUTING.html#developer-certificate-of-origin-dco

Some additional context:
https://en.wikipedia.org/wiki/Developer_Certificate_of_Origin

Regards,
Xavier