Weblink from integrations do not display preview correctly

Is your feature request related to a problem? Please describe.
Links coming from HTTP integrations do not display preview correctly. The preview shown is one generic for Playbl, rather then one specific for the game posted. This is for integrations for new games, used for webhooks for automatic posting on Wordpress, Tumblr, Telegram and Mastodon. The integration for Discord works correctly.

Describe the solution you'd like
I would like to see a preview of the game page, similar to what happens when using the integration for Discord.

Additional context
Add any other context or screenshots about the feature request here.

[jongrim]

This is because of the underlying architecture at the moment (see issue #209 for some more info). Unfortunately it's a really big change to take on, and I've been focused on other smaller improvements for now. Hopefully I can make this happen though!