Make modbus available to plugins

[belowm]

This allows plugins to access the modbus by adding DeyeModbus to PluginContext.

[kbialek]

What do you want to use modbus for in the plugin?

[belowm]

What do you want to use modbus for in the plugin?

Because I'd like to mutate a specific modbus register in my plugin:

class DeyeGridChargeCurrentEventProcessor(DeyeEventProcessor):
    def __init__(
        self, logger_config: DeyeLoggerConfig, mqtt_client: DeyeMqttClient, modbus: DeyeModbus
    ):
        self.__log = logger_config.logger_adapter(logging.getLogger(DeyeGridChargeCurrentEventProcessor.__name__))
        self.__logger_config = logger_config
        self.__mqtt_client = mqtt_client
        self.__modbus = modbus
        self.__gridcharge_current_topic_suffix = "settings/gridcharge_current"

    def get_id(self):
        return "gridcharge_current"

    def get_description(self):
        return "Gridcharge Current over MQTT"

    def initialize(self):
        self.__mqtt_client.subscribe_command_handler(
            self.__logger_config.index, self.__gridcharge_current_topic_suffix, self.handle_command
        )

    def handle_command(self, client: Client, userdata, msg: MQTTMessage):
        try:
            gridcharge_current = int(msg.payload)
        except ValueError:
            self.__log.error("Invalid Gridcharge Current value: %s", msg.payload)
            return

        if gridcharge_current not in range(161):
            self.__log.error("Given Gridcharge Current invalid: %f", gridcharge_current)
            return

        self.__log.info("Setting Gridcharge Current to %f", gridcharge_current)

        if self.__modbus.write_register_uint(int(128), gridcharge_current):
            self.__log.info("Register updated")
        else:
            self.__log.error("Updating register failed")

class DeyePlugin:
    def __init__(self, plugin_context: DeyePluginContext):
        self.processor = DeyeGridChargeCurrentEventProcessor(plugin_context.config.logger_configs[0], plugin_context.mqtt_client, plugin_context.modbus)

    def get_event_processors(self) -> [DeyeEventProcessor]:
        return [self.processor]

I'm not much of a python guy, maybe there's a better way to archive this? :)

[kbialek]

@belowm Remove this extra import, otherwise the PR check will not pass and will block the merge of the PR