feat: support replicate chat models (#1989)

* feat: add Replicate adaptor and integrate into channel and API types

* feat: support llm chat on replicate

relay/channeltype/helper.go

@@ -37,6 +37,8 @@ func ToAPIType(channelType int) int {
 		apiType = apitype.DeepL
 	case VertextAI:
 		apiType = apitype.VertexAI
+	case Replicate:
+		apiType = apitype.Replicate
 	case Proxy:
 		apiType = apitype.Proxy
 	}