feat: Add Linear notification list item

src/integrations/linear/listitem/LinearNotificationListItem.tsx

@@ -0,0 +1,39 @@
+import { LinearProjectNotificationListItem } from "./LinearProjectNotificationListItem";
+import { LinearIssueNotificationListItem } from "./LinearIssueNotificationListItem";
+import { NotificationListItemProps } from "../../../notification";
+import { environment } from "@raycast/api";
+import { useMemo } from "react";
+
+export function LinearNotificationListItem({ notification, mutate }: NotificationListItemProps) {
+  const icon = useMemo(() => {
+    if (environment.appearance === "dark") {
+      return "linear-logo-light.svg";
+    }
+    return "linear-logo-dark.svg";
+  }, [environment]);
+
+  if (notification.metadata.type !== "Linear") return null;
+
+  switch (notification.metadata.content.type) {
+    case "IssueNotification":
+      return (
+        <LinearIssueNotificationListItem
+          icon={icon}
+          notification={notification}
+          linearIssueNotification={notification.metadata.content.content}
+          mutate={mutate}
+        />
+      );
+    case "ProjectNotification":
+      return (
+        <LinearProjectNotificationListItem
+          icon={icon}
+          notification={notification}
+          LinearProjectNotification={notification.metadata.content.content}
+          mutate={mutate}
+        />
+      );
+    default:
+      return null;
+  }
+}