feat: add osu status to rpc

tests/imageCheck.test.ts

@@ -0,0 +1,24 @@
+import { expect, test } from 'bun:test';
+
+const urlIsValidImage = async (url: string) => {
+  try {
+    const request = await fetch(url);
+    if (!request.ok) return false;
+    const contentType = request.headers.get('content-type');
+    return contentType?.startsWith('image/');
+  } catch {
+    return false;
+  }
+};
+
+test('image check', async () => {
+  const imageUrl = 'https://assets.ppy.sh/beatmaps/1/covers/list@2x.jpg';
+  const imageCheckResult = await urlIsValidImage(imageUrl);
+  expect(imageCheckResult).toBe(true);
+});
+
+test('image check fail', async () => {
+  const imageUrl = 'https://assets.ppy.sh/beatmaps/0/covers/list@2x.jpg';
+  const imageCheckResult = await urlIsValidImage(imageUrl);
+  expect(imageCheckResult).toBe(false);
+});