Support capturing packets directly when rooted

[semekh]

My usecase is: I already have a VpnService, and I'd like to verify that the traffic is routed the way it should be. But capturing using PCAPRemote disables the previous VpnService.

Great app btw! Helps a lot in troubleshooting network issues.

[egorovandreyrm]

Thanks for the feedback.
I may implement the functionality in the future. Unfortunately, I have no spare time now.