Final --phy_simulators warning removals for this branch, and former polar coding function corrections

Done for do_RLC_BEARER, do_MAC_CELLGROUP, do_PHYSICALCELLGROUP function like do_MIB_NR and do_SERVINGCELLCONFIGCOMMON

-Update LTE RRC ASN to Rel15, but there is a parameter that does not meet the specifications since I modify asn file.
-I modify the name of the parameter "maxRS-IndexCellQual-r15" to "maxRS-IndexCellQualNR-r15" in structure,
 otherwise it will be conflict with the Macro define "#define maxRS_IndexCellQual_r15 (16)" in asn1_constant.h

- It coulde be build, but there are "implicit declaration of function" warnings in MAC layer.
  Since we re-use the MAC layer function.
- Maybe it is already could be test for configuration module.

- Create task for GAB_APP and GAN_RRC
- Create the NR FAPI for P5 interface
- *It could be build, but still have a lot of warning need to maintain

2.NR RRC do_SERVINGCELLCONFIGCOMMON for all of common config. will be transmit to lower layer by rrc_mac_config_req_gNB"

1. Modify the wrong name file ans1c to asn1c 2.Update the do_MIB function 3.Update the gNB initial parameter for non-standalone

# Conflicts:
#	openair2/RRC/LITE/rrc_eNB.c

Conflicts:
	cmake_targets/build_oai
	openair1/PHY/LTE_TRANSPORT/prach.c
	openair1/SCHED/phy_procedures_lte_ue.c
	targets/ARCH/COMMON/common_lib.h
	targets/RT/USER/lte-softmodem.c

This feature requires an un-official version of asn1c :

https://github.com/velichkov/asn1c/tree/s1ap

As reported by Emad Alizade:

    According to "Issue255 256 257 paging reesta release" that has been
    merged in develop version, we have a question: In rrc_eNB_free_UE()
    function only all ulsch related memory of user has been cleaned, but
    I think not only ulsch memory but also dlsch memory must be cleaned.
    I tested the latest develop version and with repetition UE attach-detach
    procedures we find that the dlsch memory has not been cleaned and after
    repeat this sequence (45 times) assertion with cause UE_id!=-1 (no free
    or exiting dlsch_context, dci_tools.c: fill_dci_and_dlsch() ) occurred
    and no UE will be attached to system.

The fixes in this commit are from Emad Alizade.

(cherry picked from commit 4b5b5564)

# Conflicts:
#	openair1/PHY/LTE_TRANSPORT/dlsch_coding.c
#	openair2/LAYER2/MAC/eNB_scheduler.c
#	openair2/RRC/LITE/rrc_eNB.c