Add windowed terminal, basic text, rectangle rendering, and keyboard events

UI/GUI/UIEelements/Text.cs

@@ -0,0 +1,18 @@
+using System.Drawing;
+
+namespace RemSox.UI.GUI.UIEelements;
+
+public class Text() : UIElement("Text")
+{
+    public string Content
+    {
+        get;
+        set => SetProperty(nameof(Content), ref field, value);
+    } = string.Empty;
+
+    public Color Color
+    {
+        get;
+        set => SetProperty(nameof(Color), ref field, value);
+    } = Color.White;
+}