move duplicate ItemType extension to shared

JellyfinPlayer tvOS/LibrarySearchView.swift

@@ -101,19 +101,3 @@ struct LibrarySearchView: View {
         }
     }
 }
-
-private extension ItemType {
-
-    var localized: String {
-        switch self {
-        case .episode:
-            return "Episodes"
-        case .movie:
-            return "Movies"
-        case .series:
-            return "Shows"
-        default:
-            return ""
-        }
-    }
-}

Shared/Objects/Typings.swift

@@ -73,4 +73,17 @@ enum ItemType: String {
     case movie = "Movie"
     case series = "Series"
     case season = "Season"
+  
+    var localized: String {
+        switch self {
+        case .episode:
+            return "Episodes"
+        case .movie:
+            return "Movies"
+        case .series:
+            return "Shows"
+        default:
+            return ""
+        }
+    }
 }