TBD: Apps and connections insights

[ameshkov]

Just throwing ideas here:

1. AdGuard needs to be able to work as a proper firewall preventing connections until the user explicitly allows it.
2. AdGuard should be able to show what it knows about this or that app and/or hostname (see research assistant in little snitch).
3. Connection properties (servers location detection)?

What else?

Linked issues:

• Notification on a new app installation AdguardForAndroid#1069
• Improve "Filtered Apps" section AdguardForWindows#1286
• [Feature Request] Add 'Whois' of IP Address on the 'Log Details' Page AdguardForAndroid#2394