Add illustration to XR README

Added an illustration of Alicia with Viture Luma Ultra and Pro Neckband.

Author: pieper

PW44_2026_GranCanaria/Projects/CollaborativeArApplicationUsingOpenigtlink3DSlicerAndMagicLeap2/README.md

@@ -95,6 +95,9 @@ This time, we aim to follow a similar approach, this time with Magic Leap 2, wit
 # Illustrations
 
 <!-- Add pictures and links to videos that demonstrate what has been accomplished. -->
+## Alicia with Viture Luma Ultra and Pro Neckband
+
+<img width="1406" height="1874" alt="image" src="https://github.com/user-attachments/assets/b52efeb7-17c6-466e-a74a-4b0d3ed2c2b2" />
 
 
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