add the embedding config file

api/db/embedding.py

@@ -0,0 +1,10 @@
+from collections import namedtuple
+from langchain.embeddings import OpenAIEmbeddings, ElasticsearchEmbeddings, SentenceTransformerEmbeddings
+
+Embedding = namedtuple("Embedding",["embedding", "dimension", "distance"])
+
+EMBEDDINGS = {
+    'SENTENCE': Embedding(SentenceTransformerEmbeddings(),768, "Cosine"),
+    'OPEN_AI': Embedding(OpenAIEmbeddings(), 1563, "Cosine"),
+}
+