added openvino vision generation

Author: szeyu

src/embeddedllm/backend/onnxruntime_engine.py

@@ -48,7 +48,7 @@ def __init__(self, model_path: str, vision: bool, device: str = "cpu"):
                 allow_patterns=None,
                 repo_type="model",
             )
-            model_path = snapshot_path
+            self.model_path = snapshot_path
 
         self.model_config = AutoConfig.from_pretrained(self.model_path, trust_remote_code=True)
         self.device = device