Add FontAwesome and color extensions

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

Author: deathbeam

src/Raylib.NET.ImGui.Example/Program.cs

@@ -1,11 +1,16 @@
 using RaylibNET;
 using static RaylibNET.Raylib;
 using Hexa.NET.ImGui;
+using System.Numerics;
 
+
+SetConfigFlags(
+    (int)(ConfigFlags.FLAG_WINDOW_HIGHDPI)
+);
 InitWindow(800, 600, "Raylib.NET.ImGui - Example");
 SetTargetFPS(60);
 
-RaylibNET.RlImGui.Setup();
+RlImGui.Setup();
 
 int counter = 0;
 bool showDemo = true;
@@ -18,14 +23,47 @@
     // Start ImGui frame
     RlImGui.Begin();
 
-    if (ImGui.Button("Increment Counter"))
+    // Demonstrate FontAwesome icons
+    // Test icon-only display (matching C++ rlImGui example)
+    ImGui.TextUnformatted(FontAwesome.Jedi);
+    ImGui.SameLine();
+    ImGui.Text($"{FontAwesome.Rocket} Welcome to Raylib.NET.ImGui!");
+    ImGui.Separator();
+
+    // Button with icon
+    if (ImGui.Button($"{FontAwesome.Plus} Increment Counter"))
     {
         counter++;
     }
     ImGui.SameLine();
-    ImGui.Text($"Counter: {counter}");
+    ImGui.Text($"{FontAwesome.Hashtag} Counter: {counter}");
+
+    ImGui.Spacing();
+
+    // More icon examples
+    ImGui.Text($"{FontAwesome.House} Home");
+    ImGui.SameLine();
+    ImGui.Text($"{FontAwesome.Gear} Settings");
+    ImGui.SameLine();
+    ImGui.Text($"{FontAwesome.Heart} Favorite");
+    ImGui.SameLine();
+    ImGui.Text($"{FontAwesome.Star} Rating");
+
+    ImGui.Spacing();
+
+    // Demonstrate color extensions
+    var raylibColor = Color.RAYWHITE;
+    var imguiColor = raylibColor.ToImGui();
+    ImGui.TextColored(imguiColor, "This text uses Raylib.RAYWHITE converted to ImGui color!");
+
+    var customImGuiColor = new Vector4(0.2f, 0.8f, 0.4f, 1.0f);
+    var convertedBack = customImGuiColor.ToRaylib();
+    ImGui.Text($"Custom color RGB: {convertedBack.R}, {convertedBack.G}, {convertedBack.B}");
+
+    ImGui.Spacing();
+    ImGui.Separator();
 
-    ImGui.Checkbox("Show ImGui Demo Window", ref showDemo);
+    ImGui.Checkbox($"{FontAwesome.WindowMaximize} Show ImGui Demo Window", ref showDemo);
     if (showDemo)
     {
         ImGui.ShowDemoWindow(ref showDemo);

src/Raylib.NET.ImGui/ColorExtensions.cs

@@ -0,0 +1,38 @@
+using System.Numerics;
+namespace RaylibNET;
+
+/// <summary>
+/// Extension methods for converting between Raylib Color and ImGui Vector4 color formats.
+/// </summary>
+public static class ColorExtensions
+{
+    /// <summary>
+    /// Convert a Raylib Color to ImGui Vector4 format (normalized 0.0-1.0 floats).
+    /// </summary>
+    /// <param name="color">The Raylib color to convert</param>
+    /// <returns>A Vector4 with RGBA components normalized to 0.0-1.0 range</returns>
+    public static Vector4 ToImGui(this Color color)
+    {
+        return new Vector4(
+            color.R / 255f,
+            color.G / 255f,
+            color.B / 255f,
+            color.A / 255f
+        );
+    }
+
+    /// <summary>
+    /// Convert an ImGui Vector4 color to Raylib Color format (0-255 byte values).
+    /// </summary>
+    /// <param name="color">The ImGui color to convert</param>
+    /// <returns>A Raylib Color with RGBA components in 0-255 range</returns>
+    public static Color ToRaylib(this Vector4 color)
+    {
+        return new Color(
+            (byte)(color.X * 255f),
+            (byte)(color.Y * 255f),
+            (byte)(color.Z * 255f),
+            (byte)(color.W * 255f)
+        );
+    }
+}