feat(wireguard): amneziawg implementation (#3150)

internal/wireguard/common.go

@@ -0,0 +1,28 @@
+package wireguard
+
+import (
+	"net"
+)
+
+type tunDevice interface {
+	Close() error
+	Name() (string, error)
+}
+
+type bind interface {
+	Close() error
+}
+
+type userspaceDevice interface {
+	Close()
+	Wait() chan struct{}
+	IpcHandle(net.Conn)
+	IpcSet(string) error
+}
+
+type userSpaceBackend struct {
+	createTun    func(string, int) (tunDevice, error)
+	createBind   func() bind
+	createDevice func(tunDevice, bind, Logger) userspaceDevice
+	preStart     func(userspaceDevice, Settings) error
+}