HTTP request error handling

[friday]

On the demo package ingest page (ex https://web.whip.eyevinn.technology/) we are not showing any error message if the connection fails. Some ad blockers (like Brave browsers defaults) are blocking cross-site requests to localhost/and or 127.0.0.1 etc from other domains even if the browser actually allows them without CORS issues.

Maybe it would be better to be able to handle/catch these as WHIPClient events, and use that from the demo page to show some modal?

They are thrown from

whip/packages/sdk/src/WHIPProtocol.ts

Line 15 in 7789d20

return fetch(url, {

Possibly related to #106