wip; need to fix a test; and write more

Signed-off-by: Billy Stalnaker <bstalnaker@roadie.com>

plugins/notifications-common/report.api.md

@@ -5,6 +5,12 @@
 ```ts
 import { Config } from '@backstage/config';
 
+// @public (undocumented)
+export type ChannelSetting = {
+  id: string;
+  origins: OriginSetting[];
+};
+
 // @public (undocumented)
 export const getProcessorFiltersFromConfig: (
   config: Config,
@@ -63,17 +69,7 @@ export type NotificationReadSignal = {
 
 // @public (undocumented)
 export type NotificationSettings = {
-  channels: {
-    id: string;
-    origins: {
-      id: string;
-      enabled: boolean;
-      topics?: {
-        id: string;
-        enabled: boolean;
-      }[];
-    }[];
-  }[];
+  channels: ChannelSetting[];
 };
 
 // @public
@@ -90,4 +86,17 @@ export type NotificationStatus = {
   unread: number;
   read: number;
 };
+
+// @public (undocumented)
+export type OriginSetting = {
+  id: string;
+  enabled: boolean;
+  topics?: TopicSetting[];
+};
+
+// @public (undocumented)
+export type TopicSetting = {
+  id: string;
+  enabled: boolean;
+};
 ```