- send one empty request to host to get current time (have to do this since we power cycle the CAM every time we use it)
- name picture according to the current date and time

defined pin numbers for managing data transmissions of I2C, SDI12, RS485.
initial setup for the client_central_mast client

- move get_host_mac to RtcMemory implementation
- allow hardcoding of mac address of host on client

minor refactors

moved TEROS10 to wolle Library, added tests that check if all libraries compile and run successfully on an ESP32 where no peripherals are connected (see TestSensorLibraries.cpp)