Add OpenAI embedding models

Author: intitni

Tool/Sources/Preferences/Types/OpenAIEmbeddingModel.swift

@@ -1,4 +1,6 @@
 public enum OpenAIEmbeddingModel: String, CaseIterable {
+    case textEmbedding3Small = "text-embedding-3-small"
+    case textEmbedding3Large = "text-embedding-3-large"
     case textEmbeddingAda002 = "text-embedding-ada-002"
 }
 
@@ -7,6 +9,10 @@ public extension OpenAIEmbeddingModel {
         switch self {
         case .textEmbeddingAda002:
             return 8191
+        case .textEmbedding3Small:
+            return 8191
+        case .textEmbedding3Large:
+            return 8191
         }
     }
 }