updated three prefab, ignored asset store tools folder, fixed scene settings

.gitignore

 !/[Aa]ssets/**/*.meta
 
 # Uncomment this line if you wish to ignore the asset store tools plugin
-# /[Aa]ssets/AssetStoreTools*
+/[Aa]ssets/AssetStoreTools*
 
 # Autogenerated Jetbrains Rider plugin
 [Aa]ssets/Plugins/Editor/JetBrains*

Assets/ImageTracking/Art/Three/ThreePrefab.prefab

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Assets/ImageTracking/Scenes/ImageTracking.unity

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Assets/ImageTracking/Scripts/DistanceManager.cs

-using System.Collections;
-using System.Collections.Generic;
-using TMPro;
-using UnityEngine;
+using UnityEngine;
 
 public class DistanceManager : MonoBehaviour
 {

Assets/UX/Scenes/UXManagerScene.unity

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ProjectSettings/EditorBuildSettings.asset

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   m_Scenes:
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