[chore:] window icon integration

MainWindow.axaml

@@ -3,7 +3,7 @@
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-        x:Class="spplus.MainWindow" WindowState="Maximized"
+        x:Class="spplus.MainWindow" WindowState="Maximized" Icon="res/logo.ico"
         Title="spplus">
     <Border>
         <Grid RowDefinitions="30,*">

MessageBox.axaml

@@ -2,7 +2,7 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        mc:Ignorable="d" SizeToContent="WidthAndHeight"
+        mc:Ignorable="d" SizeToContent="WidthAndHeight" Icon="res/logo.ico"
         x:Class="spplus.MessageBox" WindowStartupLocation="CenterScreen"
         Title="MessageBox">
     <StackPanel>

spplus.csproj

@@ -19,4 +19,16 @@
     </PackageReference>
     <PackageReference Include="Lucide.Avalonia" Version="0.1.35"/>
   </ItemGroup>
+
+  <ItemGroup>
+    <None Remove="res\logo.ico"/>
+    <AvaloniaResource Include="res\logo.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </AvaloniaResource>
+    <None Remove="res\logo.png"/>
+    <AvaloniaResource Include="res\logo.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </AvaloniaResource>
+  </ItemGroup>
+
 </Project>