Add BETA keycloak integration in BigBang

CODEOWNERS

README.md

chart/admin.bigbang.dev-certs.yaml

chart/templates/NOTES.txt

chart/templates/istio/controlplane/values.yaml

chart/templates/jaeger/values.yaml

chart/templates/keycloak/gitrepository.yaml

chart/templates/keycloak/helmrelease.yaml

chart/templates/keycloak/imagepullsecret.yaml

chart/templates/keycloak/namespace.yaml

chart/templates/keycloak/values.yaml

chart/templates/kiali/values.yaml

chart/templates/logging/elasticsearch-kibana/values.yaml

chart/templates/monitoring/values.yaml

chart/templates/twistlock/values.yaml

chart/values.yaml

charter/BigBangPackages.md

charter/packages/keycloak/Architecture.md

docs/airgap/scripts/values.yaml

scripts/deploy/01_deploy_bigbang.sh