fix issues related to tx timing advance for HW RF board unpaired RX/TX timestaps and for 5G UE TA algorithm

Tx timestamp computation adjustment by 3 types:

• known aberration per board type,fully moved inside the board driver instead of 50% of code in OAI main code
• command line fix offset, for testing: cleaning and make it at top level (as it is not related to 4G, 5G, UE, ...)
• 3GPP timing advance algo: UE compensate the light of speed delay from xNB tracking measurement

Make also the 3/4 sampling option at top level