Feat/support multimodal embedding (#29115)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/rag/embedding/embedding_base.py

@@ -9,11 +9,21 @@ class Embeddings(ABC):
         """Embed search docs."""
         raise NotImplementedError
 
+    @abstractmethod
+    def embed_multimodal_documents(self, multimodel_documents: list[dict]) -> list[list[float]]:
+        """Embed file documents."""
+        raise NotImplementedError
+
     @abstractmethod
     def embed_query(self, text: str) -> list[float]:
         """Embed query text."""
         raise NotImplementedError
 
+    @abstractmethod
+    def embed_multimodal_query(self, multimodel_document: dict) -> list[float]:
+        """Embed multimodal query."""
+        raise NotImplementedError
+
     async def aembed_documents(self, texts: list[str]) -> list[list[float]]:
         """Asynchronous Embed search docs."""
         raise NotImplementedError