Add support for filters and namespaces in similarity search in Pinecone similarity_score_threshold (#7301)

At the moment, pinecone vectorStore does not support filters and
namespaces when using similarity_score_threshold search type.
In this PR, I've implemented that. It passes all the kwargs except
"score_threshold" as that is not a supported argument for method
"similarity_search_with_score".
---------

Co-authored-by: Bagatur <baskaryan@gmail.com>

langchain/vectorstores/pinecone.py

@@ -166,7 +166,8 @@ class Pinecone(VectorStore):
         k: int = 4,
         **kwargs: Any,
     ) -> List[Tuple[Document, float]]:
-        return self.similarity_search_with_score(query, k)
+        kwargs.pop("score_threshold", None)
+        return self.similarity_search_with_score(query, k, **kwargs)
 
     def max_marginal_relevance_search_by_vector(
         self,