refactor: move the embedding to the rag module and abstract the rerank runner for extension (#9423)

api/core/rag/datasource/vdb/tencent/tencent_vector.py

@@ -8,10 +8,10 @@ from tcvectordb.model import index as vdb_index
 from tcvectordb.model.document import Filter
 
 from configs import dify_config
-from core.rag.datasource.entity.embedding import Embeddings
 from core.rag.datasource.vdb.vector_base import BaseVector
 from core.rag.datasource.vdb.vector_factory import AbstractVectorFactory
 from core.rag.datasource.vdb.vector_type import VectorType
+from core.rag.embedding.embedding_base import Embeddings
 from core.rag.models.document import Document
 from extensions.ext_redis import redis_client
 from models.dataset import Dataset