Feat/improve vector database logic (#1193)

Co-authored-by: jyong <jyong@dify.ai>

api/core/index/base.py

@@ -16,6 +16,10 @@ class BaseIndex(ABC):
     def create(self, texts: list[Document], **kwargs) -> BaseIndex:
         raise NotImplementedError
 
+    @abstractmethod
+    def create_with_collection_name(self, texts: list[Document], collection_name: str, **kwargs) -> BaseIndex:
+        raise NotImplementedError
+
     @abstractmethod
     def add_texts(self, texts: list[Document], **kwargs):
         raise NotImplementedError
@@ -28,6 +32,10 @@ class BaseIndex(ABC):
     def delete_by_ids(self, ids: list[str]) -> None:
         raise NotImplementedError
 
+    @abstractmethod
+    def delete_by_group_id(self, group_id: str) -> None:
+        raise NotImplementedError
+
     @abstractmethod
     def delete_by_document_id(self, document_id: str):
         raise NotImplementedError