[client] Add firewall rules to the debug bundle (#3089)

Adds the following to the debug bundle:
- iptables: `iptables-save`, `iptables -v -n -L`
- nftables: `nft list ruleset` or if not available formatted output from netlink (WIP)

client/server/debug_nonlinux.go

@@ -0,0 +1,15 @@
+//go:build !linux || android
+
+package server
+
+import (
+	"archive/zip"
+
+	"github.com/netbirdio/netbird/client/anonymize"
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+// collectFirewallRules returns nothing on non-linux systems
+func (s *Server) addFirewallRules(req *proto.DebugBundleRequest, anonymizer *anonymize.Anonymizer, archive *zip.Writer) error {
+	return nil
+}