feature<Welcome>: supports to open terminal without repositories

src/Resources/Locales/en_US.xaml

@@ -297,8 +297,9 @@
     <sys:String x:Key="Text.Merge.Mode">Merge Option :</sys:String>
 
     <sys:String x:Key="Text.Welcome.Title">SourceGit</sys:String>
-    <sys:String x:Key="Text.Welcome.OpenOrInit">Open Local Repository</sys:String>
+    <sys:String x:Key="Text.Welcome.OpenOrInit">Open local repository</sys:String>
-    <sys:String x:Key="Text.Welcome.Clone">Clone Remote Repository</sys:String>
+    <sys:String x:Key="Text.Welcome.OpenTerminal">Open terminal</sys:String>
+    <sys:String x:Key="Text.Welcome.Clone">Clone remote repository</sys:String>
     <sys:String x:Key="Text.Welcome.DragDrop">DRAG-DROP YOUR FOLDER</sys:String>
     <sys:String x:Key="Text.Welcome.Start">START</sys:String>
     <sys:String x:Key="Text.Welcome.Recent">RECENT OPENED</sys:String>

src/Resources/Locales/zh_CN.xaml

@@ -297,6 +297,7 @@
 
     <sys:String x:Key="Text.Welcome.Title">欢迎使用本软件</sys:String>
     <sys:String x:Key="Text.Welcome.OpenOrInit">打开本地仓库</sys:String>
+    <sys:String x:Key="Text.Welcome.OpenTerminal">打开GIT终端</sys:String>
     <sys:String x:Key="Text.Welcome.Clone">克隆远程仓库</sys:String>
     <sys:String x:Key="Text.Welcome.DragDrop">支持拖放操作</sys:String>
     <sys:String x:Key="Text.Welcome.Start">开始使用</sys:String>

src/Views/Widgets/Welcome.xaml

@@ -52,16 +52,22 @@
                     Text="{DynamicResource Text.Welcome.Start}"
                     FontSize="13pt"/>
                 <StackPanel Grid.Row="1" Margin="4,12,0,0" Orientation="Vertical">
-                    <Button Grid.Column="0" Grid.Row="0" Click="OnOpenClicked" Height="28" Style="{DynamicResource Style.Button.Link}">
+                    <Button Click="OnOpenClicked" Height="28" Style="{DynamicResource Style.Button.Link}">
                         <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
-                            <Path Width="16" Height="16" Data="{StaticResource Icon.Folder.Open}" Fill="{DynamicResource Brush.Accent1}"/>
+                            <Path Width="16" Height="15" Data="{StaticResource Icon.Folder.Open}" Fill="{DynamicResource Brush.Accent1}"/>
-                            <TextBlock Margin="12,0,0,0" Text="{DynamicResource Text.Welcome.OpenOrInit}" Foreground="{DynamicResource Brush.Accent1}"/>
+                            <TextBlock Margin="8,0,0,0" Text="{DynamicResource Text.Welcome.OpenOrInit}" Foreground="{DynamicResource Brush.Accent1}"/>
                         </StackPanel>
                     </Button>
-                    <Button Grid.Column="0"  Grid.Row="1" Click="OnCloneClicked" Height="28" Style="{DynamicResource Style.Button.Link}">
+                    <Button Click="OnCloneClicked" Height="28" Style="{DynamicResource Style.Button.Link}">
                         <StackPanel Orientation="Horizontal">
                             <Path Width="16" Height="16" Data="{StaticResource Icon.Pull}" Fill="{DynamicResource Brush.Accent1}"/>
-                            <TextBlock Margin="12,0,0,0" Text="{DynamicResource Text.Welcome.Clone}" Foreground="{DynamicResource Brush.Accent1}"/>
+                            <TextBlock Margin="8,0,0,0" Text="{DynamicResource Text.Welcome.Clone}" Foreground="{DynamicResource Brush.Accent1}"/>
+                        </StackPanel>
+                    </Button>
+                    <Button Click="OnOpenTerminalClicked" Height="28" Style="{DynamicResource Style.Button.Link}">
+                        <StackPanel Orientation="Horizontal">
+                            <Path Width="16" Height="14" Data="{StaticResource Icon.Terminal}" Fill="{DynamicResource Brush.Accent1}"/>
+                            <TextBlock Margin="8,0,0,0" Text="{DynamicResource Text.Welcome.OpenTerminal}" Foreground="{DynamicResource Brush.Accent1}"/>
                         </StackPanel>
                     </Button>
                 </StackPanel>

src/Views/Widgets/Welcome.xaml.cs

@@ -78,6 +78,31 @@ namespace SourceGit.Views.Widgets {
             if (dialog.ShowDialog() == true) CheckAndOpen(dialog.SelectedPath);
         }
 
+        private void OnOpenTerminalClicked(object sender, RoutedEventArgs e) {
+            if (MakeSureReady()) {
+                var bash = Path.Combine(Models.Preference.Instance.Git.Path, "..", "bash.exe");
+                if (!File.Exists(bash)) {
+                    Models.Exception.Raise(App.Text("MissingBash"));
+                    return;
+                }
+
+                if (Models.Preference.Instance.General.UseWindowsTerminal) {
+                    Process.Start(new ProcessStartInfo {
+                        FileName = "wt",
+                        Arguments = "\"{bash}\"",
+                        UseShellExecute = false,
+                    });
+                } else {
+                    Process.Start(new ProcessStartInfo {
+                        FileName = bash,
+                        UseShellExecute = true,
+                    });
+                }
+
+                e.Handled = true;
+            }
+        }
+
         private void OnCloneClicked(object sender, RoutedEventArgs e) {
             if (MakeSureReady()) new Popups.Clone().Show();
         }