Add Visage v2.3.0 - facial recognition plugin

[cc1234475]

What's new in v2.3.0

Add support for fansdb and javstash

Add support for both stash instances. Visualize the performers coming from different indexes using a small icon in the bottom right.

Better stash-box configuration warnings

When no stash-box metadata provider is configured (or none named "StashDB"), the modal now shows a clear banner with two levels of guidance:

• No providers at all — directs users to Settings → Metadata Providers with a link to the Stash docs
• No provider named "StashDB" — tells users to rename their provider

Previously only a generic "not configured" message appeared.

Refactored & smaller codebase

• Extracted trySprite/tryPreview into src/services/scan.ts
• Extracted sprite modal data fetching into useSpriteModalData hook
• Extracted seekVideo, isOpsMenu, injectMenu, detectTheme into utility modules
• SpriteResultModal shrunk by 132 lines

[discourse-stashapp]

This pull request has been mentioned on Stash Forum. There might be relevant details there:

https://discourse.stashapp.cc/t/visage/11785/2