display the number/percent of loaded resources in context menu

[nick-owens-eero]

Is your feature request related to a problem? Please describe.
when using the companion, and some resources are loaded from my gateway, it is not easy to know how many resources were loaded from it.

Describe the solution you'd like
the 'Current Tab' context menu should display X/Y and Z% of resources loaded from the gateway.

Describe alternatives you've considered
a user could use the browser inspector to find out the origin resources were loaded from, but that is cumbersome and doesn't summarize it easily.

Additional context
Add any other context or screenshots about the feature request here.

[welcome]

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[lidel]

Thank you for submitting this idea.

Similar one is already tracked in #662 so closing this one as duplicate, feel free to provide comments there. 🙏