Move scale command to content and turn it into a toolshed command (#39349)

* scale command

* fix namespaces

Content.Client/Sprite/ScaleVisualsSystem.cs

@@ -0,0 +1,38 @@
+using System.Numerics;
+using Content.Shared.Sprite;
+using Robust.Client.GameObjects;
+
+namespace Content.Client.Sprite;
+
+public sealed class ScaleVisualsSystem : SharedScaleVisualsSystem
+{
+    [Dependency] private readonly SpriteSystem _sprite = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ScaleVisualsComponent, AppearanceChangeEvent>(OnChangeData);
+    }
+
+    private void OnChangeData(Entity<ScaleVisualsComponent> ent, ref AppearanceChangeEvent args)
+    {
+        if (!args.AppearanceData.TryGetValue(ScaleVisuals.Scale, out var scale) ||
+            args.Sprite == null) return;
+
+        // save the original scale
+        ent.Comp.OriginalScale ??= args.Sprite.Scale;
+
+        var vecScale = (Vector2)scale;
+        _sprite.SetScale((ent.Owner, args.Sprite), vecScale);
+    }
+
+    // revert to the original scale
+    protected override void ResetScale(Entity<ScaleVisualsComponent> ent)
+    {
+        base.ResetScale(ent);
+
+        if (ent.Comp.OriginalScale != null)
+            _sprite.SetScale(ent.Owner, ent.Comp.OriginalScale.Value);
+    }
+}