Add Jellyfin logo and icon

[RunC0deRun]

Proposed change

Add logo and icon for the newly proposed Jellyfin media system integration.

Type of change

• Add a new logo or icon for a new core integration
• Add a missing icon or logo for an existing core integration
• Add a new logo or icon for a custom integration (custom component)
  • I've opened up a PR for my custom integration on the Home Assistant
    Python wheels repository
• Replace an existing icon or logo with a higher quality version
• Removing an icon or logo

Additional information

• Link to code base pull request: Add Jellyfin integration core#44401
• Link to documentation pull request: TBD
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/jellyfin/

Checklist

• The added/replaced image(s) are PNG
• Icon image size is 256x256px (icon.png)
• hDPI icon image size is 512x512px for (icon@2x.png)
• Logo image size has min 128px, but max 256px, on the shortest side (logo.png)
• hDPI logo image size has min 256px, but max 512px, on the shortest side (logo@2x.png)

[frenck]

✅ Approved. Can be merged as soon as the parent PR gets merged.

[frenck]

@j-stienstra The parent has been merged, could you resolve the merge conflict here?

[frenck]

@j-stienstra The custom_integration assets needs to be removed, the domains collide

[RunC0deRun]

Yeah, needed to figure that one out. Should be good now.

[frenck]

Thanks, @j-stienstra 👍