daemon: use per-interface features

Signed-off-by: Steffen Vogel <post@steffenvogel.de>

pkg/daemon/feature/epdisc/proxy/proxy.go

@@ -0,0 +1,19 @@
+// Package proxy provides tooling for transparently proxying STUN/TURN trafic between ICE agents and kernel/userspace WireGuard interfaces
+package proxy
+
+import (
+	"io"
+	"net"
+
+	"github.com/pion/ice/v2"
+
+	protoepdisc "github.com/stv0g/cunicu/pkg/proto/feature/epdisc"
+)
+
+type Proxy interface {
+	io.Closer
+
+	UpdateCandidatePair(cp *ice.CandidatePair, conn *ice.Conn) (*net.UDPAddr, error)
+
+	Type() protoepdisc.ProxyType
+}