Add notifications for new reports (#18697)

app/javascript/mastodon/locales/defaultMessages.json

@@ -2532,6 +2532,10 @@
       {
         "defaultMessage": "New sign-ups:",
         "id": "notifications.column_settings.admin.sign_up"
+      },
+      {
+        "defaultMessage": "New reports:",
+        "id": "notifications.column_settings.admin.report"
       }
     ],
     "path": "app/javascript/mastodon/features/notifications/components/column_settings.json"
@@ -2625,6 +2629,10 @@
         "defaultMessage": "{name} signed up",
         "id": "notification.admin.sign_up"
       },
+      {
+        "defaultMessage": "{name} reported {target}",
+        "id": "notification.admin.report"
+      },
       {
         "defaultMessage": "{name} has requested to follow you",
         "id": "notification.follow_request"
@@ -2653,6 +2661,31 @@
     ],
     "path": "app/javascript/mastodon/features/notifications/components/notifications_permission_banner.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Open report",
+        "id": "report_notification.open"
+      },
+      {
+        "defaultMessage": "Other",
+        "id": "report_notification.categories.other"
+      },
+      {
+        "defaultMessage": "Spam",
+        "id": "report_notification.categories.spam"
+      },
+      {
+        "defaultMessage": "Rule violation",
+        "id": "report_notification.categories.violation"
+      },
+      {
+        "defaultMessage": "{count, plural, one {{count} post} other {{count} posts}} attached",
+        "id": "report_notification.attached_statuses"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/notifications/components/report.json"
+  },
   {
     "descriptors": [
       {