link from erlang.org to Secure Coding Guidelines

[max-au]

Action item from the Security WG meeting.
It might be useful to have security-related pages on the erlang.org itself, but some specific recommendations may not be applicable to all OTP builds and version.
One way to solve it is to have a link from erlang.org to Secure Coding guidelines, similar to links to various books and guides.

[maennchen]

We should probably pick this idea back up.

A simple PR to this file will show it here.

How about this?

  - name: Secure Coding and Deployment Hardening Guidelines
    description: Best-practices for writing and running applications on the BEAM, by the Erlang Ecosystem Foundation’s Security Working Group.
    link: https://erlef.github.io/security-wg/secure_coding_and_deployment_hardening/