Provide an explanation why a dynamic plugin has a status of `Failed`

During the development of https://issues.redhat.com/browse/CONSOLE-3062, it was determined additional information is needed in order to assist a user when troubleshooting a Failed plugin (see https://github.com/openshift/console/pull/11664#issuecomment-1159024959). As it stands today, there is no data available to the console to relay to the user regarding why the plugin Failed. Presumably, a message should be added to NotLoadedDynamicPlugin to address this gap.

AC: Add `message` property to NotLoadedDynamicPluginInfo type.