Flavor text (#8070)

Content.Client/FlavorText/FlavorText.xaml

@@ -0,0 +1,5 @@
+<Control Name="CFlavorText" xmlns="https://spacestation14.io">
+    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+        <LineEdit Name="CFlavorTextInput" Access="Public" MinSize="220 0" HorizontalExpand="True" />
+    </BoxContainer>
+</Control>

Content.Client/FlavorText/FlavorText.xaml.cs

@@ -0,0 +1,25 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.FlavorText
+{
+    [GenerateTypedNameReferences]
+    public sealed partial class FlavorText : Control
+    {
+        public Action<string>? OnFlavorTextChanged;
+
+        public FlavorText()
+        {
+            RobustXamlLoader.Load(this);
+            IoCManager.InjectDependencies(this);
+
+            CFlavorTextInput.OnTextChanged += _ => FlavorTextChanged();
+        }
+
+        public void FlavorTextChanged()
+        {
+            OnFlavorTextChanged?.Invoke(CFlavorTextInput.Text);
+        }
+    }
+}