Add settings window

Options/AboutOptionsPanel.xaml

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+<windows:CategoryPanel x:Class="ProcessCpuUsageStatusWindow.Options.AboutOptionsPanel"
+                       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                       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"
+                       xmlns:windows="clr-namespace:Common.Wpf.Windows;assembly=Common.Wpf"
+                       mc:Ignorable="d"
+                       d:DesignHeight="300"
+                       d:DesignWidth="300">
+    <Grid>
+        <TextBlock Text="[Application Name]"
+                   Name="ApplicationNameLabel"
+                   VerticalAlignment="Top"
+                   FontWeight="Bold" />
+        <TextBlock Text="[Application Version]"
+                   Margin="0,22,0,0"
+                   Name="VersionLabel"
+                   VerticalAlignment="Top" />
+        <TextBlock Text="[Company]"
+                   Margin="0,44,0,0"
+                   Name="CompanyLabel"
+                   VerticalAlignment="Top" />
+    </Grid>
+</windows:CategoryPanel>

Options/AboutOptionsPanel.xaml.cs

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+using Common.Update;
+using System.Reflection;
+
+namespace ProcessCpuUsageStatusWindow.Options
+{
+    public partial class AboutOptionsPanel
+    {
+        public AboutOptionsPanel()
+        {
+            InitializeComponent();
+        }
+
+        public override void LoadPanel(object data)
+        {
+            base.LoadPanel(data);
+
+            ApplicationNameLabel.Text = Properties.Resources.ApplicationName;
+
+            var version = UpdateCheck.LocalVersion.ToString();
+            VersionLabel.Text = string.Format(Properties.Resources.About_Version, version);
+
+            CompanyLabel.Text = ((AssemblyCompanyAttribute)Assembly.GetEntryAssembly().GetCustomAttributes(typeof(AssemblyCompanyAttribute), false)[0]).Company;
+        }
+
+        public override bool ValidatePanel()
+        {
+            return true;
+        }
+
+        public override void SavePanel()
+        {
+        }
+
+        public override string CategoryName => Properties.Resources.OptionCategory_About;
+    }
+}

Options/GeneralOptionsPanel.xaml

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+<windows:CategoryPanel x:Class="ProcessCpuUsageStatusWindow.Options.GeneralOptionsPanel"
+                       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                       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"
+                       xmlns:windows="clr-namespace:Common.Wpf.Windows;assembly=Common.Wpf"
+                       xmlns:properties="clr-namespace:ProcessCpuUsageStatusWindow.Properties"
+                       xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
+                       mc:Ignorable="d"
+                       d:DesignHeight="300"
+                       d:DesignWidth="300">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"></RowDefinition>
+            <RowDefinition Height="Auto"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+        </Grid.RowDefinitions>
+        <CheckBox Content="{x:Static properties:Resources.StartWithWindows}"
+                  Name="StartWithWindows"
+                  VerticalAlignment="Top"
+                  VerticalContentAlignment="Center"
+                  Grid.ColumnSpan="2" />
+        <Label Grid.Column="0" 
+               Grid.Row="1"
+               Content="{x:Static properties:Resources.NumberOfProcesses}"
+               Margin="0,6,6,6"
+               Padding="0"
+               VerticalContentAlignment="Center" VerticalAlignment="Center" />
+        <xctk:IntegerUpDown Grid.Column="1"
+                            Grid.Row="1" x:Name="NumberOfProcesses"
+                            Minimum="1" Maximum="20"
+                            TextAlignment="Left" Margin="6"
+                            Width="50"
+                            HorizontalAlignment="Left" />
+    </Grid>
+</windows:CategoryPanel>

Options/GeneralOptionsPanel.xaml.cs

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+using Common.Wpf.Extensions;
+using System.Windows;
+
+namespace ProcessCpuUsageStatusWindow.Options
+{
+    public partial class GeneralOptionsPanel
+    {
+        public GeneralOptionsPanel()
+        {
+            InitializeComponent();
+        }
+
+        public override void LoadPanel(object data)
+        {
+            base.LoadPanel(data);
+
+            var settings = Properties.Settings.Default;
+
+            StartWithWindows.IsChecked = settings.AutoStart;
+            NumberOfProcesses.Text = settings.ProcessCount.ToString();
+        }
+
+        public override bool ValidatePanel()
+        {
+            return true;
+        }
+
+        public override void SavePanel()
+        {
+            var settings = Properties.Settings.Default;
+
+            if (StartWithWindows.IsChecked.HasValue && settings.AutoStart != StartWithWindows.IsChecked.Value)
+                settings.AutoStart = StartWithWindows.IsChecked.Value;
+
+            settings.ProcessCount = int.Parse(NumberOfProcesses.Text);
+
+            Application.Current.SetStartWithWindows(settings.AutoStart);
+        }
+
+        public override string CategoryName => Properties.Resources.OptionCategory_General;
+    }
+}