Admin Overlay stacking and ghost hiding (#35622)

* ghostbuster mouse and overlay stacks

* variable adjustment

* use map coords for distance check

* vertical stack ordering, and cvars

* skreee

* fix stack merge 'sidedness' issue

* overlays no longer try to stack to overlays at the wrong coordinates

* options slider for stack merge distance

* admin option sliders for ghost fade/hide

* Update AdminOptionsTab.xaml.cs

---------

Co-authored-by: ScarKy0 <scarky0@onet.eu>

Content.Client/Options/UI/Tabs/AdminOptionsTab.xaml.cs

@@ -8,6 +8,13 @@ namespace Content.Client.Options.UI.Tabs;
 [GenerateTypedNameReferences]
 public sealed partial class AdminOptionsTab : Control
 {
+    private const float OverlayMergeMin = 0.05f;
+    private const float OverlayMergeMax = 0.95f;
+    private const int OverlayGhostFadeMin = 0;
+    private const int OverlayGhostFadeMax = 10;
+    private const int OverlayGhostHideMin = 0;
+    private const int OverlayGhostHideMax = 5;
+
     public AdminOptionsTab()
     {
         RobustXamlLoader.Load(this);
@@ -22,6 +29,24 @@ public sealed partial class AdminOptionsTab : Control
         Control.AddOptionCheckBox(CCVars.AdminOverlayStartingJob, EnableOverlayStartingJobCheckBox);
 
         Control.Initialize();
+
+        Control.AddOptionPercentSlider(
+            CCVars.AdminOverlayMergeDistance,
+            OverlayMergeDistanceSlider,
+            OverlayMergeMin,
+            OverlayMergeMax);
+
+        Control.AddOptionSlider(
+            CCVars.AdminOverlayGhostFadeDistance,
+            OverlayGhostFadeSlider,
+            OverlayGhostFadeMin,
+            OverlayGhostFadeMax);
+
+        Control.AddOptionSlider(
+            CCVars.AdminOverlayGhostHideDistance,
+            OverlayGhostHideSlider,
+            OverlayGhostHideMin,
+            OverlayGhostHideMax);
     }
 }