Add fake llm provider

Change-Id: I7983796013f27e146506a42c8238b69a1838f1d9
diff --git a/server/llm/providers/providers.go b/server/llm/providers/providers.go
index 87015aa..98d01a8 100644
--- a/server/llm/providers/providers.go
+++ b/server/llm/providers/providers.go
@@ -1,6 +1,7 @@
 package providers
 
 import (
+	_ "github.com/iomodo/staff/llm/fake"   // Register Fake provider for testing
 	_ "github.com/iomodo/staff/llm/openai" // Register OpenAI provider
 )