feat: add VoyageAI's rerank and embeddings models (#733) #none

* Introducing VoyageAI's rerank and embeddings models

* fix: comfort CI

* fix: update test case

---------

Co-authored-by: fzowl <zoltan@voyageai.com>

libs/ktem/ktem/embeddings/manager.py

@@ -62,6 +62,7 @@ class EmbeddingManager:
             LCMistralEmbeddings,
             OpenAIEmbeddings,
             TeiEndpointEmbeddings,
+            VoyageAIEmbeddings,
         )
 
         self._vendors = [
@@ -73,6 +74,7 @@ class EmbeddingManager:
             LCGoogleEmbeddings,
             LCMistralEmbeddings,
             TeiEndpointEmbeddings,
+            VoyageAIEmbeddings,
         ]
 
     def __getitem__(self, key: str) -> BaseEmbeddings:

libs/ktem/ktem/rerankings/manager.py

@@ -52,9 +52,13 @@ class RerankingManager:
                     self._default = item.name
 
     def load_vendors(self):
-        from kotaemon.rerankings import CohereReranking, TeiFastReranking
+        from kotaemon.rerankings import (
+            CohereReranking,
+            TeiFastReranking,
+            VoyageAIReranking,
+        )
 
-        self._vendors = [TeiFastReranking, CohereReranking]
+        self._vendors = [TeiFastReranking, CohereReranking, VoyageAIReranking]
 
     def __getitem__(self, key: str) -> BaseReranking:
         """Get model by name"""