feature: add hotkey Ctrl+N to open commit details panel in a seperate window (#2506)

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Views/Histories.axaml

@@ -397,7 +397,17 @@
                 Padding="0"
                 IsVisible="{Binding IsOpenAsStandaloneVisible, Mode=OneWay}"
                 Click="OnOpenDetailsAsStandalone"
-                ToolTip.Tip="{DynamicResource Text.HistoriesDetailsStandalone}">
+                HotKey="{OnPlatform Ctrl+N, macOS=⌘+N}">
+          <ToolTip.Tip>
+            <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
+              <TextBlock Text="{DynamicResource Text.HistoriesDetailsStandalone}" VerticalAlignment="Center"/>
+              <TextBlock Margin="16,0,0,0"
+                         Text="{OnPlatform Ctrl+N, macOS=⌘+N}"
+                         Foreground="{DynamicResource MenuFlyoutItemKeyboardAcceleratorTextForeground}"
+                         FontSize="11"
+                         VerticalAlignment="Center"/>
+            </StackPanel>
+          </ToolTip.Tip>
           <Path Width="15" Height="15" Margin="0,1,0,0" Data="{StaticResource Icons.OpenAsStandalone}"/>
         </Button>