Advertise the Keycloak Helm chart in the list of community extensions

[ahus1]

Hi @jenslehnhoff - if you want to advertise the Keycloak helm chart on https://www.keycloak.org/extensions, please create a PR similar to keycloak/keycloak-web#727 to add it. Thanks!

[stefangries]

Thanks @ahus1! Jens will be available again next week, so I'll just give you a quick reply. That's a great suggestion—we'd love to do that. See you at the next KeyConf!