implement uncloudd daemon that starts a WireGuard network without peer probing

internal/machine/network/wireguard_darwin.go

@@ -0,0 +1,22 @@
+//go:build darwin
+
+package network
+
+import (
+	"context"
+	"errors"
+)
+
+type WireGuardNetwork struct{}
+
+func NewWireGuardNetwork() (*WireGuardNetwork, error) {
+	return &WireGuardNetwork{}, nil
+}
+
+func (n *WireGuardNetwork) Configure(config Config) error {
+	return errors.New("not implemented on darwin")
+}
+
+func (n *WireGuardNetwork) Run(ctx context.Context) error {
+	return errors.New("not implemented on darwin")
+}