Added XR & Hand tracking guides

docs/02-User-Guide/01-What-is-Stardust.md

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+---
+sidebar_position: 1
+---
+# Flatscreen Navigation 
+<div style={{textAlign: 'center'}}>
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube.com/embed/JCYecSlKlDI"
+  frameBorder={0}
+  allow="autoplay; encrypted-media"
+  allowFullScreen
+  style={{maxWidth: '100%', aspectRatio: '16/9'}}
+></iframe>
+</div>
+
+
+To move around, hold down `Shift + W A S D`, with `Q` for moving down and `E` for moving up.
+![wasd](/img/updated_flat_wasd.GIF)
+
+To look around, hold down `Shift + Right` Click while moving the mouse. 
+![updated_look](/img/updated_flat_look.GIF)
+
+To drag applications out of the app launcher, hold down `Shift + ~`
+![updated_drag](/img/updated_flat_drag.GIF)
+

docs/02-User-Guide/02-XR-Navigation.md

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+---
+sidebar_position: 1
+---
+# XR Navigation 
+<div style={{textAlign: 'center'}}>
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube.com/embed/JCYecSlKlDI"
+  frameBorder={0}
+  allow="autoplay; encrypted-media"
+  allowFullScreen
+  style={{maxWidth: '100%', aspectRatio: '16/9'}}
+></iframe>
+</div>
+
+
+**Quest 3 Hand tracking**:
+Pinch to drag and drop, grasp with full hand for grabbing, 
+point and click with pointer finger to click or pinch from a distance  
+
+![hand_pinching](/img/hand_pinching.GIF)
+
+**Quest 3 Controller**:
+Grab with the grip buttons, click by touching the tip of the cones or by using the trigger from a distance  
+
+![controller_click](/img/controller_click.GIF)

docs/02-User-Guide/_category_.json

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+{
+	"label": "User Guide",
+	"position": 2
+}