feat: knowledge backend management

1.knowledge_type.py
2.knowledge backend api

pilot/server/llmserver.py

@@ -23,7 +23,6 @@ from pilot.configs.model_config import *
 from pilot.model.llm_out.vicuna_base_llm import get_embeddings
 from pilot.model.loader import ModelLoader
 from pilot.server.chat_adapter import get_llm_chat_adapter
-from knowledge.knowledge_controller import router
 
 CFG = Config()
 
@@ -106,6 +105,7 @@ worker = ModelWorker(
 )
 
 app = FastAPI()
+from pilot.openapi.knowledge.knowledge_controller import router
 app.include_router(router)
 
 origins = [
@@ -119,7 +119,7 @@ app.add_middleware(
     allow_origins=origins,
     allow_credentials=True,
     allow_methods=["*"],
-    allow_headers=["*"],
+    allow_headers=["*"]
 )
 
 class PromptRequest(BaseModel):