Mine was not working till I added BUTTON_SET_PULLUP | BUTTON_DEFAULT_HIGH

fixes #1621

* Added LITESUN LA-WF3 support.

Support for LITESUN LA-WF3 / Costco Charging Essentials wall socket.

* Added LITESUN LA-WF3 support.

Support for LITESUN LA-WF3 / Costco Charging Essentials wall socket.

* LITESUN_LA_WF3 hardware.h

* LITESUN_LA_WF3 platformio.ini

* Added Teckin SP20 Power Plug

* Added Teckin SP20 to hardware

* Implemented HAMA outlet model number 00176552. There is a identical one looking exactly the same but with different part number

Signed-off-by: Markus Rudolf <info@markusrudolf.de>

Added initial support for Oukitel Smart Switch. This is a 2 outlet plug
that has the same pinout as the YiDian XS-SSA05.

* Added the configuration for the second generation OBI devices.

* Added link to the OBI Wifi Schuko Plug V2 as well as included the device in the readme.

* Restored the default configuration accidentially changed by a previous commit.

* Renamed the OBI-V2 device to EUROMATE_WIFI_STECKER_SCHUKO_V2 as suggested by mcspr.

* Fixed spelling of comment to the proper wording Schuko.