feat(metadata): add Aladin Korean book metadata provider (#351)

* feat(metadata): add Aladin Korean book metadata provider

Add support for fetching Korean book metadata from Aladin OpenAPI.
Includes search by title/author/ISBN and lookup by ISBN-10/13.

- Add ALADIN to MetadataProviderKey in @bookorbit/types
- Add AladinProviderConfig to ProviderConfigurations
- Create AladinProvider with IdentifiableProvider interface
- Add mapper for Aladin API response to MetadataCandidate
- Register provider in MetadataFetchModule
- Add provider config merge, validation, and connection test
- Include 24 unit tests (provider + mapper)

* feat(client): add Aladin provider UI integration

* refactor(metadata): use 'Aladin' label and favicon-based icon

* feat(metadata): complete Aladin provider end-to-end wiring

Persist the Aladin ItemId across fetch, scoring, locks, and file metadata round-trip, and update the affected tests.

Co-authored-by: Kyungwook Park <288273+kyungw00k@users.noreply.github.com>

---------

Co-authored-by: neon <18559658+neonsolstice@users.noreply.github.com>
Co-authored-by: Kyungwook Park <288273+kyungw00k@users.noreply.github.com>

package.json

@@ -85,7 +85,8 @@
       "@esbuild-kit/core-utils>esbuild": "^0.25.12",
       "fastify": "^5.8.5",
       "fast-uri": "^3.1.1",
-      "fast-xml-builder": "^1.1.7"
+      "fast-xml-builder": "^1.1.7",
+      "ws": "^8.21.0"
     },
     "onlyBuiltDependencies": [
       "@nestjs/core",