integration_2023_w14

See merge request oai/openairinterface5g!2048

* !1861 NR UE RX Multi-threading
* !2017 scheduling aperiodic SRS at UE
* !2046 Correctly allocate GUTI in NAS UE structures
* !2033 PBCH radio link failure detection at MAC
* !1959 bugfix: change memory management of interface between PHY and MAC scheduler
* !2041 hack: see "Bye." message when quitting gnb running with aw2s
* !2047 NR RRC - RRCReestablishment - Fix MultiplePDU Regression

Merge remote-tracking branch 'origin/nr-rrcreestablishment-fix-multipdu-proper-commits' into integration_2023_w14

Changes
1. Passing function argument  by reference.
2. Use a pointer for ue->established_drbs[drb_id - 1] in generateDRB.

This commit fixes a bug caused by global variables in the gNB_MAC_INST
structure used to transfer MAC scheduler's results to the PHY layer.

When using several threads in the PHY layer, it may happen that the
MAC scheduler is called a second time by the second PHY thread for the
next slot before the content of the global variables in the gNB_MAC_INST
structure used to store the result of the MAC scheduler for the current
slot have been consumed by the first thread, leading to unpredictable
results (all of them certainly wrong).

The solution is to introduce a small memory management module for the
interface between the PHY threads and the MAC scheduler. The MAC
scheduler now fills the data structures passed to it, and not a
global variable anymore. The PHY layer manages the structures and
ensures that no data is overwritten before being fully consumed by
the various threads of the PHY layer.

Some care has to be taken because several PHY threads will access the
same structures at the same time for a given slot (in read mode, so
it's okay). A mechanism of reference counting has thus been introduced.

Only one CC is supported. This restriction should not be too hard
to remove if/when needed. (The code before this commit does not seem
to work for more than one CC anyway.)

Flag integrityProtection work in inverse logic state, '0' means enabled which is the default the value, we need to set it to '1' to disable it

Fix SRB_configList2 and DRB_configList2 array position (new_xid) while creating RRCReconfiguration message after RRCReestablishmentComplete

Fixed a bug where the integrity protection was included in the ASN1 and caused significant throughput bottleneck.

Cosmetic changes, also changed the LOG message for updating the UEid, and moved the drb_id_to_setup_start and nb_drb_to_setup right before the function that they are used

Removed the unused variables, and changed the tenary operator conditions of drb_id_to_setup_start & nb_drb_to_setup, to the correct ones

Changed the SRB2 and DRB at the do_RRCReconfiguration arguments, to pass the correct structures that are generated

Simplify RRCReestablishmentComplete procedure with respective function,
removed the block that creates the SRB2  and created a function, with doxygen

Simplify RRCReestablishmentComplete procedure with respective function,
removed the block that creates the ASN1 DRBs  and created a function, with doxygen

Simplify RRCReestablishmentComplete procedure with respective function,
removed the block that updates NGU Tunnels and created a function, with doxygen

Simplify RRCReestablishmentComplete procedure with respective function,
removed the block that updates NAS PDUSession and created a function, with doxygen

Simplify RRCReestablishmentComplete procedure with respective function,
removed the block that frees all the NAS PDUs and created a function for this.

Cosmetic changes, added doxygen configuration, and changed the rrc_gNB_process_RRCReestablishmentComplete function arguments' alignment, so in the future if an argument is removed or added to be better visible in the commits

The generateDRB function now creates a DRB and puts it in the struct member of gNB_RRC_UE_t, from this struct we can generate ASN1 messages by calling the generateDRB_ASN1

Added function to create ASN1 DRB-ToAddMod structs from, gNB_RRC_UE_t established_drbs

Added struct member to gNB_RRC_UE_t to store the established DRBs for a UE, this can be used to generate ASN1 structs, during RRCReconfiguration