add gpt-4o (#45)

Author: qianmoQ

src/main/java/org/devlive/sdk/openai/entity/ChatEntity.java

@@ -84,6 +84,7 @@ public ChatEntityBuilder model(CompletionModel model)
                 case GPT_4_32K:
                 case GPT_4_0613:
                 case GPT_4_32K_0613:
+                case GPT_4O:
                 case TEXT_DAVINCI_002:
                 case TEXT_DAVINCI_003:
                 case CODE_DAVINCI_002:

src/main/java/org/devlive/sdk/openai/model/CompletionModel.java

@@ -134,6 +134,11 @@ public enum CompletionModel
             null,
             32768),
 
+     GPT_4O("gpt-4o",
+            "most advanced, multimodal flagship model that’s cheaper and faster than GPT-4 Turbo. Currently points to gpt-4o-2024-05-13",
+            null,
+            128000),
+
     CODE_DAVINCI_002("code-davinci-002",
             "Optimized for code-completion tasks",
             null,