[Feature] Please add German keyboard to VM console

### The required feature described as a wish

As a User, Admin and Operator, I would like to use a German keyboard layout in the VM Remote Console. This helps prevent typing errors, especially when entering passwords.

该 issue 只提到了 VM Remote Console，没有提供文件或测试。首先定位 console 的入口点和现有的键盘布局处理，然后检查 console 输入是如何测试的；当可以使用德语布局并生成正确的字符（包括输入密码期间）时，即表示完成。

由索引模型根据 Issue 内容生成。