fix(server): extract image description

[tlvince]

Extracts the image description (aka caption).

Per an image from with a description set in Lightroom:

$ exiftool swans.jpg | grep Swans
Image Description               : Swans & cygnets
Caption-Abstract                : Swans & cygnets
Description                     : Swans & cygnets

Closes #4220

[bo0tzz]

How does this interact with a description set through the Immich UI?

[tlvince]

I've not tested that scenario, only extraction on import. I'd assume it follows the same upsert behaviour of the other fields exposed on the UI (date, location)?

[bo0tzz]

Since #5066, date and location are written to an XMP sidecar file when edited inside Immich. Maybe we should do the same for description here?

[jrasm91]

We already write Image Description actually

[alextran1502]

Hello! Can you help with fixing the e2e test?

[tlvince]

👋🏻 @alextran1502, e2e's green now