creation of new file:openair2/RRC/LITE/rrc_types_NB_IoT.h

creation of new file openair2/LAYER2/MAC/vars_NB_IoT.h

Merge branch 'develop-nb-iot-mac' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-mac

+renaming functions and variables
+adding missing NB_IoT functions

openair2/RRC/LITE/proto_nb_iot.h -> openair2/RRC/LITE/proto_NB_IoT.h

renaming file: openair2/RRC/LITE/MESSAGES/asn1_msg_nb_iot.h -> openair2/RRC/LITE/MESSAGES/asn1_msg_NB_IoT.h
openair2/RRC/LITE/defs_nb_iot.h -> openair2/RRC/LITE/defs_NB_IoT.h

renaming file:openair2/PHY_INTERFACE/IF_Module_nb_iot.h -> openair2/PHY_INTERFACE/IF_Module_NB_IoT.h

renaming file:openair2/PHY_INTERFACE/IF_Module_L2_primitives_nb_iot.h -> openair2/PHY_INTERFACE/IF_Module_L2_primitives_NB_IoT.h

renaming file:openair2/PHY_INTERFACE/IF_Module_L2_primitives_nb_iot.c -> openair2/PHY_INTERFACE/IF_Module_L2_primitives_NB_IoT.c
openair2/PHY_INTERFACE/IF_Module_nb_iot.c -> openair2/PHY_INTERFACE/IF_Module_NB_IoT.c
openair2/RRC/LITE/L2_interface_nb_iot.c -> openair2/RRC/LITE/L2_interface_NB_IoT.c
openair2/RRC/LITE/MESSAGES/asn1_msg_nb_iot.c -> openair2/RRC/LITE/MESSAGES/asn1_msg_NB_IoT.c
openair2/RRC/LITE/rrc_common_nb_iot.c -> openair2/RRC/LITE/rrc_common_NB_IoT.c
openair2/RRC/LITE/rrc_eNB_nb_iot.c -> openair2/RRC/LITE/rrc_eNB_NB_IoT.c
openair2/RRC/LITE/vars_nb_iot.c -> openair2/RRC/LITE/vars_NB_IoT.c

renaming file: openair2/LAYER2/MAC/eNB_scheduler_nb_iot.c -> openair2/LAYER2/MAC/eNB_scheduler_NB_IoT.c
openair2/LAYER2/MAC/eNB_scheduler_RA_nb_iot.c -> openair2/LAYER2/MAC/eNB_scheduler_RA_NB_IoT.c
openair2/LAYER2/MAC/eNB_scheduler_dlsch_nb_iot.c -> openair2/LAYER2/MAC/eNB_scheduler_dlsch_NB_IoT.c
openair2/LAYER2/MAC/eNB_scheduler_primitives_nb_iot.c -> openair2/LAYER2/MAC/eNB_scheduler_primitives_NB_IoT.c
openair2/LAYER2/MAC/eNB_scheduler_ulsch_nb_iot.c -> openair2/LAYER2/MAC/eNB_scheduler_ulsch_NB_IoT.c
openair2/LAYER2/MAC/main_nb_iot.c -> openair2/LAYER2/MAC/main_NB_IoT.c

openair1/SCHED/phy_procedures_lte_eNb_nb_iot.c -> openair1/SCHED/phy_procedures_lte_eNb_NB_IoT.c

renaming file:openair1/SCHED/IF_Module_L1_primitives_nb_iot.c -> openair1/SCHED/IF_Module_L1_primitives_NB_IoT.c

renaming file:openair1/PHY/LTE_TRANSPORT/proto_nb_iot.h -> openair1/PHY/LTE_TRANSPORT/proto_NB_IoT.h

renaming file: openair1/PHY/LTE_TRANSPORT/dci_tools_nb_iot.c -> openair1/PHY/LTE_TRANSPORT/dci_tools_NB_IoT.c

seperation for files in /SCHED