feat: add Qwen3.5 model implementation and registration (#1249)

* feat: add Qwen3.5 model implementation and registration

* feat: accelerate video process logic

Author: Artessay

lmms_eval/models/__init__.py

@@ -77,6 +77,7 @@
     "qwen2_vl": "Qwen2_VL",
     "qwen3_omni": "Qwen3_Omni",
     "qwen3_vl": "Qwen3_VL",
+    "qwen3_5": "Qwen3_5",
     "reka": "Reka",
     "ross": "Ross",
     "sam3": "SAM3",