fix: use monitor.vcp.set_vcp_feature (monitorcontrol v4 API), fix monitor indices 1+2

detect_vcp.py

@@ -10,8 +10,9 @@ print("Skanowanie monitorow (VCP code 0x60 - Input Source)...")
 for i, handle in enumerate(get_monitors()):
     with handle as monitor:
         try:
-            current = monitor.get_vcp_feature(VCP_INPUT_SOURCE)
-            print(f"  Monitor {i}: VCP input = {current.value} (0x{current.value:02X})")
+            current = monitor.vcp.get_vcp_feature(VCP_INPUT_SOURCE)
+            val = current[0]
+            print(f"  Monitor {i}: VCP input = {val} (0x{val:02X})")
         except Exception as e:
             print(f"  Monitor {i}: blad odczytu - {e}")
 print()