feat: Update model lists and enhance model retrieval in Adaptor

- Refactored ModelList in the gemini constant to include new models and remove outdated ones.
- Modified the GetModelList function in the Adaptor to consolidate model lists from multiple sources, ensuring a comprehensive and updated list is returned.
- Commented out deprecated models in the vertex constants for clarity and future reference.

relay/channel/vertex/adaptor.go

@@ -176,7 +176,20 @@ func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycom
 }
 
 func (a *Adaptor) GetModelList() []string {
-	return ModelList
+	var modelList []string
+	for i, s := range ModelList {
+		modelList = append(modelList, s)
+		ModelList[i] = s
+	}
+	for i, s := range claude.ModelList {
+		modelList = append(modelList, s)
+		claude.ModelList[i] = s
+	}
+	for i, s := range gemini.ModelList {
+		modelList = append(modelList, s)
+		gemini.ModelList[i] = s
+	}
+	return modelList
 }
 
 func (a *Adaptor) GetChannelName() string {