Add language catalog selector

Sources/MusicAssistantCore/Domain/SongProject.swift

@@ -535,6 +535,32 @@ public struct LanguageSelection: Codable, Equatable, Identifiable, Sendable {
     }
 }
 
+public struct LanguageCatalogItem: Codable, Equatable, Identifiable, Sendable {
+    public let id: String
+    public var name: String
+    public var familyCategory: String
+    public var aliases: [String]
+    public var searchTerms: [String]
+
+    public init(
+        id: String,
+        name: String,
+        familyCategory: String,
+        aliases: [String] = [],
+        searchTerms: [String] = []
+    ) {
+        self.id = id
+        self.name = name
+        self.familyCategory = familyCategory
+        self.aliases = aliases
+        self.searchTerms = searchTerms
+    }
+
+    public var language: LanguageSelection {
+        LanguageSelection(id: id, name: name)
+    }
+}
+
 public struct DialectSelection: Codable, Equatable, Identifiable, Sendable {
     public let id: String
     public var name: String