✨(frontend) allow user to test audio output

Inspired by GMeet user experience. Offer a sound tester button
to our users while configuring their audio output.

uprise.mp3 has a free license. We should credit them in our legal
terms asap.

src/frontend/package-lock.json

@@ -37,7 +37,7 @@
         "@typescript-eslint/parser": "7.13.1",
         "@vitejs/plugin-react": "4.3.1",
         "eslint": "8.57.0",
-        "eslint-config-prettier": "^9.1.0",
+        "eslint-config-prettier": "9.1.0",
         "eslint-plugin-jsx-a11y": "6.9.0",
         "eslint-plugin-react-hooks": "4.6.2",
         "eslint-plugin-react-refresh": "0.4.7",
@@ -454,7 +454,6 @@
     },
     "node_modules/@clack/prompts/node_modules/is-unicode-supported": {
       "version": "1.3.0",
-      "dev": true,
       "inBundle": true,
       "license": "MIT",
       "engines": {