Show gallery images from an Immich album

[gregistech]

Use case

Uploading pictures twice would be a waste of resource, and the Immich project for storing images has gotten big traction over the last few months.

Proposal

Connect wger's gallery tab to Immich and display an album dedicated to progress pictures.

[aero31aero]

Immich has a pretty powerful API too: https://immich.app/docs/api/

This should be a doable issue if there is sufficient demand.

I guess this feature would target people who're already selfhosting Immich so as a v1 it should be fine to ask for these two things:

1. Immich server URL
2. Immich API Key

Let the users handle creating the API key on Immich's interface themselves.