Adds hand labelers (#4903)

* Adds hand labelers

* Removes unnecessary thing

* Docs

* Reverts some changes

* Addresses comments and adds inhand sprites

* Addressed comments

Co-authored-by: Watermelon914 <3052169-Watermelon914@users.noreply.gitlab.com>

Content.Client/HandLabeler/UI/HandLabelerWindow.xaml.cs

@@ -0,0 +1,26 @@
+using System;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.HandLabeler.UI
+{
+    [GenerateTypedNameReferences]
+    public partial class HandLabelerWindow : SS14Window
+    {
+        public event Action<string>? OnLabelEntered;
+
+        public HandLabelerWindow()
+        {
+            RobustXamlLoader.Load(this);
+
+            LabelLineEdit.OnTextEntered += e => OnLabelEntered?.Invoke(e.Text);
+        }
+
+        public void SetCurrentLabel(string label)
+        {
+            LabelLineEdit.Text = label;
+        }
+    }
+}