Support link buttons in non-application-owned webhooks

[RaniAgus]

At the moment, Discord only supports components for application-owned webhooks¹. However, link components don't send an interaction when clicked², so, in practice, they could work without having an application listening to the click event.

It would be nice to be able to send a message with a link button component to any webhook, without the need to create an application for that.

Footnotes

1. https://discord.com/developers/docs/resources/webhook ↩

2. https://discord.com/developers/docs/interactions/message-components#component-object ↩

[advaith1]

This is now possible with ?with_components=true! #7368

(also, this is a duplicate of #3887)