Enable XR Preview Mode for PICO OS

Supported features in the immersive preview mode
- Passthrough
- Hand tracking
Notes:
- Multi-window is only available for internal apps on PICO OS, therefore launching adjacent windows is not possible currently.
- Passthrough splash screen is not supported on PICO OS

platform/android/java/editor/src/main/java/org/godotengine/editor/BaseGodotEditor.kt

@@ -53,6 +53,7 @@ import org.godotengine.godot.error.Error
 import org.godotengine.godot.utils.PermissionsUtil
 import org.godotengine.godot.utils.ProcessPhoenix
 import org.godotengine.godot.utils.isHorizonOSDevice
+import org.godotengine.godot.utils.isPicoOSDevice
 import org.godotengine.godot.utils.isNativeXRDevice
 import java.util.*
 import kotlin.math.min
@@ -521,6 +522,10 @@ abstract class BaseGodotEditor : GodotActivity() {
 			return isHorizonOSDevice()
 		}
 
+		if (featureTag == "picoos") {
+			return isPicoOSDevice()
+		}
+
         return false
     }
 }