新增全量拉取功能，允许用户从远程同步所有物料数据，优化用户体验。更新前端视图以支持新命令，并添加同步状态管理，确保操作的安全性和反馈。

yy-admin-master/YY.Admin/Views/MixerMaterial/MixerMaterialListView.xaml

@@ -93,6 +93,13 @@
                         <TextBlock Text="新增" Style="{StaticResource IconButtonStyle}"/>
                     </StackPanel>
                 </Button>
+                <Button Style="{StaticResource ButtonInfo}" Command="{Binding PullAllCommand}"
+                        IsEnabled="{Binding IsSyncing, Converter={StaticResource Boolean2BooleanReConverter}}">
+                    <StackPanel Orientation="Horizontal">
+                        <md:PackIcon Kind="CloudDownload"/>
+                        <TextBlock Text="全量拉取" Style="{StaticResource IconButtonStyle}"/>
+                    </StackPanel>
+                </Button>
             </hc:UniformSpacingPanel>
         </Border>