Putting back SIGINT detection for lte-softmodem and initial skeleton to retrieve runtime stats from eNB/gNB
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

	(*) The MBMS Counting function allows the MCE to request the eNB(s) to count and
	  report per MBSFN area for one or more MBMS services the number of connected UEs
	  receiving the MBMS Service or interested in receiving it.
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

UE_list_t is now used as a separate list. It can be e.g. used in the
scheduler to mark groups of users. The original UE_list_t is renamed to
UE_info_t to reflect that it is a container for information about UEs.

ignoring command line paramters clock_source and time_source in lte-softmodem and harmonizing it with nr-softmodem
time_source and clock_source handled separately in usrp_lib.cpp

ENABLE_ITTI macro removal, modified telnet server to support all executables, modified record player to finalize switch to run-time option and allow usage with any device

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

	2. Dedicated MBMS tasks manager:
	   -If MBMS gets enabled through softmodem config file it will launch SCTP task (to check with S1 interface)
	3. "On the flight" dynamic RU configuration update mechanism implemented

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

Remove useless differences with regular OAI, enhance the build to be compatible with regular binaries

start L1_thread and ru_thread if it is RCC or RRU by adding if(NFAPI==NFAPI_MODE_VNF||NFAPI_MODE_PNF)