This stops all ongoing threads (using pthread_join()), and marks FIFOs
to not block anymore. In this case, returned messages will be NULL.

A detached thread cannot be joined with pthread_join(). However, this
is crucial for correct resetting of the nr-softmodem. Therefore, do not
create threads in detached state.

- First stop threads then free memory
- Don't call kill_NR_RU_proc() twice (is called in stop_RU())
- Memory allocation optimizations

integration_2022_wk32

See merge request oai/openairinterface5g!1658

MR !1551 Use F1 internally: RRC Message Transfer
MR !1645 fix(ci): Fixes for the legacy LTE bench
MR !1654 Fix for NDI init at UE
MR !1656 ngap: minor fix: access the array correctly
MR !1635 Fix SDAP in RFSIM mode
MR !1643 add asn1c logs
MR !1647 Function to get sample rate and BW

 - Problem with escaping chars
 - Killing properly tshark process on EPC
 - standalone Terminate eNB was failing
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

integration_2022_wk31b

See merge request oai/openairinterface5g!1649

MR !1624 NR PUCCH2 fix
MR !1627 fix for pusch dtx in phytest mode
MR !1634 Minor optimization in function init_symbol_rotation
MR !1637 gtp: small fix: set E if there is an extension header
MR !1641 Resolve AMF ip address using FQDN
delete files rxsigF0.m, txsig0.m, ldpctest_BG_1_Zc_384_rate_1-3_block_length_8448_maxit_5.txt
MR !1593 Reworking of BWP handling at MAC (initial MR)
MR !1652 fix for 3-digit MNC in asn1_msg.c