feat: add vision demo with file upload and image URL extraction to Agent class

Makefile

@@ -2,6 +2,7 @@ DEMO_REPLIKA = .venv/bin/ragent.demo_replika
 DEMO_DISCUSS = .venv/bin/ragent.demo_discuss 
 DEMO_BATCH_MESSAGES = .venv/bin/ragent.demo_batch_messages
 DEMO_TOOLS = .venv/bin/ragent.demo_tools
+DEMO_VISION = .venv/bin/ragent.demo_vision
 PIP = .venv/bin/pip 
 
 default:
@@ -29,3 +30,8 @@ demo_batch_messages:
 demo_tools:
 	@echo "Executing Tools Demo."
 	$(DEMO_TOOLS)
+
+demo_vision:
+	@echo "Executing Vision Demo."
+	$(DEMO_VISION)
+