Support for DIGOO DG-R8H weather module

**Describe the problem you have/What new integration you would like**

I'd like ESPHome to have functionality for DG-R8H weather sensors (implementing this would _probably_ mean support for other chinese cheap weather sensors as many of these probably share internals.

**Please describe your use case for this integration and alternatives you've tried:**

I have tried to get the info from raw dump, but there is just so much data coming in (for one reason or another, i have no idea) that i failed miserably.

**Additional context**

Link to device: https://www.banggood.com/Digoo-DG-R8H-433MHz-Wireless-Digital-Hygrometer-Thermometer-Weather-Station-Sensor-for-TH11300-8380-p-1178108.html?rmmds=search&cur_warehouse=CN

I am running ESPHome with on Sonoff RF mini, and have number of DG-R8H's available, so I am willing to give any info that I can and also test any future code.

Thank you.