feat: Support for Command Line-Only Linux VPS Installation

[real-jiakai]

Hello Developer,

I have carefully reviewed your project and noticed that it currently supports only graphical Linux environments. However, I am working with a cloud-based VPS that only has a command-line interface.

Considering the constraints of server environments that often lack a graphical interface, would you consider supporting a version of cloudseeder that can be installed on Linux systems without graphical components? An ideal solution would include a one-click installation script that, upon completion, provides an address to an application management panel (e.g., IP address:port). This would allow users like myself to manage and install applications directly from the panel in a headless server environment.