ESP01 UART splitter and more

Board as an intermediate link between ESOP-01 and the device. It can be used to monitor both UARTs and program the ESP-01.

It allows monitoring of both UARTs (Serial or Serial1), the selection of the UART is done by jumper J2.
No buttons need to be pressed for programming if programming from the Ardino IDE. For this it uses the RTS and DTR signals.
It has not yet been implemented or tested.