Make community repository more visible

[jvanz]

Recently, we addressed bunch changes request from the CNCF Kubewarden annual review. But we can do a final sprint and fix little further things that can be done to improve even more. Specially to help contributor to find the community repository containing a lot of documentation about the project and who it works. The acceptance criteria will list all the change we can do.

Acceptance criteria

• [x] Fix the email used in the Security Disclose page in the documentation website to be the same used in the SECURITY file from the community repository
• [x] Updates the README of all of our repositories adding the repository scope and status badges of each of them

[jvanz]

Everything is done. Closing this issue. Thanks for the reviews @flavio!