This update enables users to share content directly to LinkedIn with higher quality images through LinkedIn's official API. Previously, shares were limited to small preview images. The change improves the social media sharing experience by allowing full-size image posts when users authorize the integration.

The linkedin API allows us to post on behalf of users if they authorize it.
Notably this allows us to post large images instead of the tiny preview we get with opengraph.

Additionally we move some of the linkedin API logic into a class to make it more easily reusable.

task-5059124