* Identify and show onCall contact points with a badge in case the plugin is installed
* Add onCall logo for onCall contact points Badge
* Refactor and make Grafana App Receiver type more generic, not only for onCall type
* Show onCall notification policy in the specific routing table with special onCall badge
* Fix tests
* Move onCall badge to the type column in contact points view table
* Fix typos and remove onCallIntegrations from tagTypes in alertingApi
* Fetch only local plugins instead of all (external are not needed) and don't fetch plugin details
* Use directly useGetOnCallIntegrationsQuery and more PR review suggestions
* Move onCall contact point to the top in the drop-down, in the notification policy view
* Add PR review requested changes
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