Cohere support added

.env.example

@@ -49,6 +49,10 @@ OPENAI_LIKE_API_KEY=
 # You only need this environment variable set if you want to use Mistral models
 MISTRAL_API_KEY=
 
+# Get the Cohere Api key by following these instructions -
+# https://dashboard.cohere.com/api-keys
+# You only need this environment variable set if you want to use Cohere models
+COHERE_API_KEY=
 
 # Get LMStudio Base URL from LM Studio Developer Console
 # Make sure to enable CORS