fix: use hash-router URL format for listing links in email adapters (#335)

The UI is served through a HashRouter, and most adapters (telegram,
slack, discord, ntfy, ...) already link to ${baseUrl}/#/listings/listing/:id.
The email adapters (resend, smtp, mailJet, sendGrid) and the http adapter
were missing the /# - the router never saw the route and dumped the user
on the default overview instead of the listing.

lib/notification/adapter/http.js

@@ -14,7 +14,7 @@ const mapListing = (listing, baseUrl) => ({
   size: listing.size,
   title: listing.title,
   url: listing.link,
-  fredyUrl: baseUrl && listing.id ? `${baseUrl}/listings/listing/${listing.id}` : null,
+  fredyUrl: baseUrl && listing.id ? `${baseUrl}/#/listings/listing/${listing.id}` : null,
 });
 
 export const send = async ({ serviceName, newListings, notificationConfig, jobKey, baseUrl }) => {