Add Solarman integration (#995)

Home Assistant component for Solarman collectors used with a variety of inverters. https://github.com/StephanJoubert/home_assistant_solarman

README.md

@@ -179,6 +179,7 @@
 - [InSPIRE](https://github.com/NREL/InSPIRE) - Here we will collect scripts, trainings, studies, and any other open-source material that can help further the understanding and research of agrivoltaics.
 - [twoaxistracking](https://github.com/pvlib/twoaxistracking) - A python package for simulating two-axis tracking solar collectors, particularly self-shading.
 - [huawei_solar](https://github.com/wlcrs/huawei_solar) - This integration exposes the information and functions made available by Huawei Solar inverters directly via one of its Modbus interfaces in Home Assistant.
+- [Solarman integration](https://github.com/StephanJoubert/home_assistant_solarman) - Home Assistant component for interacting with Solarman data collectors used with a variety of inverters.
 
 ### Wind Energy
 - [DSWE](https://github.com/TAMU-AML/DSWE-Package) - An R implementation of various data science methods for wind energy (DSWE) applications, such as providing machine learning methods to accurately estimate the wind power curve.