Add Release Engineering projects and link to KEPs
Add Release Engineering projects and link to KEPs

This commit adds to the document links to the release engineering
subprojects KEPs, a description of the current efforts and a
description of the auto fast forward project.

Also, a link to the SIG Release kubecon talk is included.

Signed-off-by: Adolfo García Veytia (Puerco) <c76c83ea7a5d94ec25e22856464ed8d194c3e7a7@chainguard.dev>

kubernetes/community,kubernetes/community,kubernetes/community