Add MPNet model and update vector store for Hugging Face embeddings

application/vectorstore/base.py

@@ -44,6 +44,11 @@ class BaseVectorStore(ABC):
             embedding_instance = embeddings_factory[embeddings_name](
                 cohere_api_key=embeddings_key
             )
+        elif embeddings_name == "huggingface_sentence-transformers/all-mpnet-base-v2":
+            embedding_instance = embeddings_factory[embeddings_name](
+                model_name="./model/all-mpnet-base-v2",
+                model_kwargs={"device": "cpu"},
+            )
         else:
             embedding_instance = embeddings_factory[embeddings_name]()