title	issue
implement cms error collection	NEXT-19224

Administration

Added collection and display of errors to sw-cms-detail and sw-cms-sidebar
Added properties badgeType and hasSimpleBadge to sw-sidebar-item to be used by sw-sidebar-navigation-item, which renders those as notification badges in the 4 common types
Deprecated data properties missingElements and isSaveable in sw-cms-detail
Deprecated methods getRedundantElementsWarning and getMissingElements in sw-cms-detail