Add support for Topgreener Smart Round Plug-In (TGWF115PRM)

[d-allin]

https://topgreener.com/product/round-smart-wi-fi-plug-in-10a-with-energy-monitoring-white/

Definitions from tuya currently missing scale=1 for cur_power and cur_voltage (see home-assistant/core#152295) so scaling by 10 in yaml.

[{"id": 1, "name": "switch_on", "type": "Boolean", "format": "{}", "enumMap": {}}, {"id": 2, "name": "countdown", "type": "Integer", "format": "{\"unit\":\"\",\"min\":0,\"max\":86400,\"scale\":0,\"step\":1}", "enumMap": {}}, {"id": 4, "name": "cur_current", "type": "Integer", "format": "{\"unit\":\"mA\",\"min\":0,\"max\":30000,\"scale\":0,\"step\":1}", "enumMap": {}}, {"id": 5, "name": "cur_power", "type": "Integer", "format": "{\"unit\":\"W\",\"min\":0,\"max\":50000,\"scale\":0,\"step\":1}", "enumMap": {}}, {"id": 6, "name": "cur_voltage", "type": "Integer", "format": "{\"unit\":\"V\",\"min\":0,\"max\":2500,\"scale\":0,\"step\":1}", "enumMap": {}}]

As this is an upstream thing being corrected in a dirty way downstream via this method, it may be preferable to leave the scaling alone and have users correct with template sensors. Otherwise I'll update the scaling when (if) Tuya ever fixes the problem on their end.

[make-all]

It is OK to put correct scaling in if you are certain it is incorrect in the documentation. The actual scaling seems consistent with other smartplugs, so any "correction" in future is likely to be to the documentation rather than the firmare.