* adds extended HardwareSerial examples
* Adds new example with Serial RxTimeout
* adds and improves Serial onReceive expamples
* adjust includes CMake - UART example
* adjust includes CMake - UART example
* fixes CMake and CI
* adds ESP/Serial to CMakeList
* adds ESP/Serial to CMakeList
* fixes demo include
* fixes BREAK demo
* fixes onReceive demo
* Changes FIFO Full criteria
Changed the "1-by-1" Serial only when baud rate is 57600 or lower.
* example code replacement
* replaces functions in hal
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