Add save API endpoint to frontend for URL based saving

packages/web/pages/api/save.ts

@@ -0,0 +1,18 @@
+import type { NextApiRequest, NextApiResponse } from 'next'
+import { saveUrlMutation } from '../../lib/networking/mutations/saveUrlMutation'
+
+// eslint-disable-next-line import/no-anonymous-default-export
+export default async (
+  req: NextApiRequest,
+  res: NextApiResponse
+): Promise<void> => {
+  const urlStr = req.query['url']
+  const url = new URL(urlStr as string)
+  const saveResult = await saveUrlMutation(url.toString())
+  if (saveResult?.jobId) {
+    res.redirect(`/sr/${saveResult?.jobId}`)
+    return
+  }
+
+  res.status(200).send('ok')
+}