[dev] moonraker machine.py adaptation

[ihrapsa]

• Make a symlink from webcamd -> mjpg-streamer

ln -s /etc/init.d/mjpg-streamer /etc/init.d/webcamd

• Change to the following to make the cllient buttons work:

async def shutdown_machine(self) -> None:
        await self._execute_cmd("poweroff")

    async def reboot_machine(self) -> None:
        await self._execute_cmd("reboot")

    async def do_service_action(self,
                                action: str,
                                service_name: str
                                ) -> None:
        await self._execute_cmd(
            f'/etc/init.d/{service_name} {action}')

• Change to the following to check allowed services:

async def _find_active_services(self):
        services = os.listdir("/etc/init.d/")
        for svc in services:
            for allowed in ALLOWED_SERVICES:
                if svc.startswith(allowed):
                    self.available_services.append(svc)
        self.system_info['available_services'] = self.available_services