Add auto detection of LXC

[michelroegl-brunner]

🌟 Briefly describe the feature

Add auto detection of LXC

📝 Detailed description

Add the abillity to autodetect already create LXC. maybe by tag?

💡 Why is this useful?

To have already createtd lxcs also in the app.

[zandhaas]

Plus 1
That was my first thought too.