Add the ability to turn off VPN on an excluded website

### Issue Details

when you are on a website that is in the exclusions list it is not possible to turn the VPN on or off, you have to either enable the VPN on the site and then turn it on/off or switch to another tab that's not in the exclusions

nor is it possible to see from the extension icon whether the VPN is on or off in the first place

### Proposed solution

adding a global switch that would turn the VPN on/off from any website

modifying the extension icon so you can see whether VPN is globally on or off, for example make it yellow when it's globally on but you're on a site where you have disabled it

### Alternative solution

_No response_