NSA CI debug update for SA mode

See merge request aburger/openairinterface5g!82

CBRA Procedure Working for SA Mode

See merge request aburger/openairinterface5g!81

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

MR !1279 : Improvements to support other NR bands
Minor improvements and small bug fixes to support other MR bands

MR !1294 : code cleanup, no feature
Remove legacy code, not used and not usable anymore and fix a issue in PDCP NETLINK initialization

MR !1298 : 5G NR timing fixes

MR !1295 : NR UE PDCCH fixes
Removing some hardcoding and bugs in dci detection at UE, mostly for SIB1 and RA

MR !1303 : fix bug in GNB MAC nr_store_dlsch_buffer() to handle multipe UEs correctly.

Merge remote-tracking branch 'origin/episys/mel/sa_development_init' into episys/david/nsa_ci_debug_for_sa

Got rid of unnecessary mac->scc check as well

The following was changed in this commit:
 - A new struct in the mac instance was created
   for all emulated L1 fields.
 - NR UE RRC state bug was fixed
 - Checking the RAR rnti based on the MAC instance
   ra.ra_rnti and not hardcoding to 0x10b
 - Modified the name of the new emulate_l2 flag
   to make sense: emulate_l1

The DCIs are filtered already in the NRUE when
the NFAPI messages are handled.

Also, changed some if statement formatting.

In SA mode, we will not be able to process the SIB if
we change for mac->scc_SIB == NULL : return;

So we change the statement for NSA mode

It will likely break SA mode because it will
filter out Msg3. I will come back to this and
fix it for Msg3.

Also, reverted a DCI filtering change to exist again.