ProtonVPN extension

[Mujtaba1i]

This extension adds a new Vicinae extension that enables quick command-based control of ProtonVPN directly from Vicinae.

Features:

• Connect to ProtonVPN
• Disconnect from ProtonVPN
• Toggle VPN connection state
• View current VPN status
  Repository:
  https://github.com/Mujtaba1i/vicinae-protonvpn-extension

The extension builds successfully using the Vicinae SDK and is ready for store inclusion.

[magnushinge]

Hey Mujiba.
I have 3 things I think you should add to this to make it more user friendly:

1. Add a screen that says you are missing the dependency proton-vpn-cli if it is not installed on the user's machine
2. If you are not logged in and try to use any of the commands, open a menu where you can log in, or if that is too hard since the CLI seems like a pain to work with, just a screen explaining that you are not logged in and how you can log in. Currently it just throws a "Command failed" which can easily confuse users
3. Add a split view in the "Dashboard" where you can see your network status instead of it being an independent menu, I think it makes more sense to just have it in the dashboard.
   Maybe take inspiration from how the bluetooth plugin did this: