Implement MVP for the statue decoration minigame (#65)

MVP implemented with:
- placing, removing etc. decorations
- saving the state, displaying it on the map, restoring when game restarts
- saving screenshots to folder on device

Co-authored-by: Michal Pikulski <michal@foolhardyhorizons.com>
Co-authored-by: Michal Pikulski <michal.a.pikulski@gmail.com>
Reviewed-on: #65

Assets/Scripts/Minigames/StatueDressup/UI/PlayAreaPage.cs

@@ -0,0 +1,32 @@
+using UI.Core;
+
+namespace Minigames.StatueDressup.UI
+{
+    /// <summary>
+    /// UIPage wrapper for the statue decoration play area.
+    /// Simple stock page with no transition animations.
+    /// </summary>
+    public class PlayAreaPage : UIPage
+    {
+        protected override void DoTransitionIn(System.Action onComplete)
+        {
+            // Instant transition - just show
+            gameObject.SetActive(true);
+            onComplete?.Invoke();
+        }
+
+        protected override void DoTransitionOut(System.Action onComplete)
+        {
+            // Instant transition - just hide
+            gameObject.SetActive(false);
+            onComplete?.Invoke();
+        }
+
+        public override void OnBackPressed()
+        {
+            // Play area is the root page - don't allow back navigation
+            // Override if you want custom behavior (e.g., quit minigame)
+        }
+    }
+}
+