Add windows support and update wireguard-go deps

iface/iface_unix.go

@@ -0,0 +1,17 @@
+// +build linux darwin
+
+package iface
+
+import (
+	"golang.zx2c4.com/wireguard/ipc"
+	"net"
+)
+
+// getUAPI returns a Listener
+func getUAPI(iface string) (net.Listener, error) {
+	tunSock, err := ipc.UAPIOpen(iface)
+	if err != nil {
+		return nil, err
+	}
+	return ipc.UAPIListen(iface, tunSock)
+}