[Frontend] Move engine/protocol.py out openai folder (#54492)

Signed-off-by: wang.yuqi <yuqi.wang@daocloud.io>
Signed-off-by: wang.yuqi <noooop@126.com>
Co-authored-by: Cyrus Leung <cyrus.tl.leung@gmail.com>

tests/parser/engine/test_parser_engine.py

@@ -15,15 +15,15 @@ import pytest
 import regex as re
 
 from tests.parser.engine.conftest import make_mock_tokenizer
-from vllm.entrypoints.openai.chat_completion.protocol import (
-    ChatCompletionRequest,
-    ChatCompletionToolsParam,
-)
-from vllm.entrypoints.openai.engine.protocol import (
+from vllm.entrypoints.generate.base.protocol import (
     DeltaFunctionCall,
     DeltaToolCall,
     FunctionDefinition,
 )
+from vllm.entrypoints.openai.chat_completion.protocol import (
+    ChatCompletionRequest,
+    ChatCompletionToolsParam,
+)
 from vllm.parser.abstract_parser import DelegatingParser
 from vllm.parser.engine.adapters import make_adapters
 from vllm.parser.engine.events import EventType, SemanticEvent