feat(OIDC SSO): support logout (#662)

- filter logoutservice call to perform OIDC logout in addition of bonita logout
- perform OIDC global logout with configured IdP URL
- only proceed to OIDC logout if there is a keycloak session. otherwise delegate to logoutservice
- only re create the HTTP session in case of a standard authentication
- support guest user behavior (add parameter to redirect to IdP login page when clicking on lign in in layout)

Covers [RUNTIME-68](https://bonitasoft.atlassian.net/browse/RUNTIME-68)