Add OpenAI-compatible endpoints and instance creation timestamp

pkg/openai.go

@@ -0,0 +1,13 @@
+package llamactl
+
+type OpenAIListInstancesResponse struct {
+	Object string           `json:"object"`
+	Data   []OpenAIInstance `json:"data"`
+}
+
+type OpenAIInstance struct {
+	ID      string `json:"id"`
+	Object  string `json:"object"`
+	Created int64  `json:"created"`
+	OwnedBy string `json:"owned_by"`
+}