Kill SharedEntityExtensions and all popup extensions (#20909)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Shared/Random/RandomHelperSystem.cs

@@ -0,0 +1,35 @@
+using System.Numerics;
+using Content.Shared.Random.Helpers;
+using Robust.Shared.Random;
+using Robust.Shared.Utility;
+
+namespace Content.Shared.Random;
+
+/// <summary>
+///     System containing various content-related random helpers.
+/// </summary>
+public sealed class RandomHelperSystem : EntitySystem
+{
+    [Dependency] private readonly SharedTransformSystem _transform = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    public void RandomOffset(EntityUid entity, float minX, float maxX, float minY, float maxY)
+    {
+        var randomX = _random.NextFloat() * (maxX - minX) + minX;
+        var randomY = _random.NextFloat() * (maxY - minY) + minY;
+        var offset = new Vector2(randomX, randomY);
+
+        var xform = Transform(entity);
+        _transform.SetLocalPosition(xform, xform.LocalPosition + offset);
+    }
+
+    public void RandomOffset(EntityUid entity, float min, float max)
+    {
+        RandomOffset(entity, min, max, min, max);
+    }
+
+    public void RandomOffset(EntityUid entity, float value)
+    {
+        RandomOffset(entity, -value, value);
+    }
+}