Added a grid background for building

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Assets/Scenes/SampleScene.unity

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Assets/Scripts/UI/GridViewController.cs

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+using UnityEngine.UI;
+using UnityEngine;
+
+namespace Fruitomation.UI
+{
+    [RequireComponent(typeof(Image))]
+    public class GridViewController : MonoBehaviour
+    {
+        [SerializeField] private Texture2D SourceTexture;
+        [SerializeField] private int Cols;
+        [SerializeField] private int Rows;
+
+        private Image Image;
+
+        private void Awake()
+        {
+            Texture2D tiled = TileTexture(SourceTexture, Cols, Rows);
+            Sprite sprite = Sprite.Create
+            (
+                tiled,
+                new Rect(0, 0, tiled.width, tiled.height),
+                new Vector2(0.5f, 0.5f)
+            );
+
+            Image = GetComponent<Image>();
+            Image.color = Color.white;
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+        }
+
+        private static Texture2D TileTexture(Texture2D source, int cols, int rows)
+        {
+            int srcW = source.width;
+            int srcH = source.height;
+            Texture2D result = new(srcW * cols, srcH * rows);
+
+            Color[] srcPixels = source.GetPixels();
+
+            for (int row = 0; row < rows; row++)
+            for (int col = 0; col < cols; col++)
+            {
+                result.SetPixels(col * srcW, row * srcH, srcW, srcH, srcPixels);
+            }
+
+            result.Apply();
+            return result;
+        }
+
+        private void Update() =>
+            Image.enabled = GameStateController.Is(GameState.Building);
+    }
+}

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