Add branding settings page

[thornbill]

Changes

• Moves branding settings to a separate dashboard page
• Fixes some styling issues with the emby-textarea component

Issues
N/A

[jellyfin-bot]

Cloudflare Pages deployment

Latest commit	fbaab4e
Status	✅ Deployed!
Preview URL	https://bc974a40.jellyfin-web.pages.dev
Type	🔀 Preview

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[nielsvanvelzen]

We do have an endpoint to upload a custom splash screen to, perhaps we can add support for that in this new branding page?

[thornbill]

Yeah I was thinking about adding that in a separate PR to keep this one smaller. 😉

[nielsvanvelzen]

Everything seems to work as expected. Some feedback for future improvements:

• Allow uploading the splash image(mentioned in earlier comment)
• Displaying the current splash image
• Maybe rename "splash screen" to "server background image" or something similar to make it a bit more descriptive
• Previewing the login disclaimer for when markdown/html is used
  • Use a WYSIWYG editor, may be a bit overkill though
• Use a larger minimum height for both text areas so it's obvious they're not a single line input

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sjorge]

Everything seems to work as expected. Some feedback for future improvements:

* Allow uploading the splash image(mentioned in earlier comment)

* Displaying the current splash image

* Maybe rename "splash screen" to "server background image" or something similar to make it a bit more descriptive

* Previewing the login disclaimer for when markdown/html is used
  
  * Use a WYSIWYG editor, may be a bit overkill though

* Use a larger minimum height for both text areas so it's obvious they're not a single line input

Might be worth adding this feedback here jellyfin/jellyfin-meta#81 also

[thornbill]

Might be worth adding this feedback here jellyfin/jellyfin-meta#81 also

These items are either already supported or do not require support by the server. I did create #6335 to track them here though.