Modify rules in iptables and nftables to accept all traffic not from netbird network but routed through it.
* Extend protocol and firewall manager to handle old management * Send correct empty firewall rules list when delete peer * Add extra tests for firewall manager and uspfilter * Work with inconsistent state * Review note * Update comment
Update the client's engine to apply firewall rules received from the manager (results of ACL policy).
Add a standard interface for the client firewall to support ACL.
