ModbusMQTT is a bridge between Modbus devices and MQTT. It aims to allow the operator to generically expose any compatible Modbus device as though its API were MQTT.
This is a barebones API client for reading and writing settings for Sungrow solar and hybrid inverters equipped with a WiNet-S communications module. Its only known use is `tokio_modbus-winets` (see below).
This wraps `sungrow-winets` client in the appropriate traits from [`tokio-modbus`](https://crates.io/crates/tokio-modbus) to allow accessing the Modbus registers which the Sungrow WiNet-S dongle exposes. The reason for this is simply that Sungrow's TCP Modbus support is buggy and inconsistent (though improving).