add linux support, update and fix dependences

[ANGELUSD11]

Refactor: Modernize VirtualBox integration, add Linux support, and simplify setup

Description:

🚀 Summary
This PR modernizes the VirtualBox integration and resolves the common ModuleNotFoundError: No module named 'vboxapi' error. It replaces the manual VirtualBox SDK dependency with a more
robust and automated solution, while also introducing full support for Linux environments.

🛠 Key Changes

• Library Migration: Migrated from direct vboxapi dependency to the virtualbox (pyvbox) library. This eliminates the need for users to manually download and install the VirtualBox SDK
  via vboxapisetup.py.
• Cross-Platform Support:
  • Added logic to detect VirtualBox processes on both Windows (VirtualBox.exe) and Linux (VBoxSVC, VirtualBox).
  • Implemented automatic path correction: If the script runs on Linux but finds Windows-style paths in config.ini, it automatically adjusts to the standard /usr/bin/virtualbox.
• Dependency Automation: The script now detects if pywin32 is missing on Windows systems and installs it automatically via subprocess, significantly improving the Out-Of-The-Box
  Experience (OOBE).
• Documentation Overhaul: Rewrote README.md to remove obsolete installation steps and provide clear instructions for the new cross-platform workflow.

🐞 Bug Fixes

• Fixed the "vboxapi not found" error that prevented the script from running on clean Python installations.
• Fixed absolute path failures when sharing the same config.ini between different operating systems.

✅ Verification

• Linux (Ubuntu/Arch): Verified that the script correctly detects running VMs and updates Discord status.
• Windows not tested❗