RLC optimization

Two improvements:

- using functions instead of function pointers which enables inlining
- avoid 1 malloc/free per SDU

Benchmark results:

before:

    BM_nr_rlc_am_entity/20000           5036721 ns      5036541 ns          138
    BM_nr_rlc_am_entity/20000           5032061 ns      5031849 ns          138
    BM_nr_rlc_am_entity/20000           5037071 ns      5037056 ns          138
    BM_nr_rlc_am_entity/20000           5035472 ns      5035248 ns          138
    BM_nr_rlc_am_entity/20000           5032860 ns      5032681 ns          138
    BM_nr_rlc_am_entity/20000_mean      5034837 ns      5034675 ns            5
    BM_nr_rlc_am_entity/20000_median    5035472 ns      5035248 ns            5
    BM_nr_rlc_am_entity/20000_stddev       2267 ns         2315 ns            5
    BM_nr_rlc_am_entity/20000_cv           0.05 %          0.05 %             5

after:

    BM_nr_rlc_am_entity/20000           4974403 ns      4974202 ns          140
    BM_nr_rlc_am_entity/20000           4976705 ns      4976444 ns          140
    BM_nr_rlc_am_entity/20000           5004550 ns      5004508 ns          140
    BM_nr_rlc_am_entity/20000           4974652 ns      4974460 ns          140
    BM_nr_rlc_am_entity/20000           4976447 ns      4976225 ns          140
    BM_nr_rlc_am_entity/20000_mean      4981351 ns      4981168 ns            5
    BM_nr_rlc_am_entity/20000_median    4976447 ns      4976225 ns            5
    BM_nr_rlc_am_entity/20000_stddev      13009 ns        13087 ns            5
    BM_nr_rlc_am_entity/20000_cv           0.26 %          0.26 %             5

Add Fedora 41, build_oai cleanup

- Add Fedora 41 to list of supported distributions
- Remove some dependencies in RHEL that are not necessary
- Cleanup some build_oai documentation of non-supported options

Simplify logs in gNB&UE

- reduce the amount of printf() that outputs useless info
- in MAC, PHY, NGAP, RRC, mark some "important" UE events with LOG_A for
  better visibility -> can put log_config.global_log_level analysis to
  only see important stuff
- in RRC, use some macro to consistently print logs
- track the cellID of a UE in RRC

Update pbchsim to work with other numerologies

NR PBCHSIM updated to work with 15Khz and 120Khz.

openssl and libffi are not required for building OAI. Remove them.

small fix for 3 digit mnc usage in sib1

When 3 digit MNC is used in PLMN, during preparation of SIB1, first
digit of MNC was not taking into account. UE derives Serving Network
Name (SNN) using PLMN info from sib1. Because of 5GCore and UE has
different SNNs, this leads to XRES*, RES* mismatch during Authentication
Procedure between 5GCore and UE. (SNN is used for derivation of these
keys)

snow3g: fix array size

Add functional DFT test

- clean up code on (i)dft calls
- add DFT test for some DFT sizes against trivial implementation: it
  tests a simple square signal in only real values
- correctly scale DFT-16

DFT for 9216 and 73728 don't exist and/or assert, so remove them from
the list.

By allocating sdu data and sdu header together the total amount of
free/malloc calls per SDU is reduced by 1 increasing overall performance.

Moved some functions around so that instead of a function pointer a function
call is used. This enables inlining of functions which reduces number of function calls.

During preparation of SIB1, first digit of MNC was not taking into account.
This leads to XRES*, RES* mismatch during Authentication Procedure between 5GCore and UE because of derived serving network names.

It is difficult to keep track of a "UE lifecycle". To make this more
easy, add LOG_A at major UE RRC messages.

It will be used in the next commit

This commit removes many logs that just show memory addresses, indices,
etc., which, I presume, do not mean anything to the "average user" and
developers alike.

Most printf() do not show much information (like only a "X is ready",
which is not useful for subsystems). Remove those. The rest, make them
LOG_D.

Integration: `2024.w43`

Closes #769 and #841

See merge request oai/openairinterface5g!3069

* !2994 Refactor file descriptor handling in rfsimulator
* !3010 Fix heap overflow in websrv
* !3043 CI: Update RAN-gNB-N300-Timing-Phytest-LDPC test cases
* !3060 process registration reject in UE
* !3062 fix nr rlc tests
* !3067 Bugfix: Fill QFI for N3 GTP messages
* !3057 Bugfix in ue pusch mac pdu creation
* !3068 getopt() returns int
* !3056 F1AP Enc/Dec Library follow-up
* !3064 T: don't check argument in optimized version of T IDs
* !2786 Add F1 Handover procedures
* !2980 Refactor NAS 5GS PDU Session Establishment Accept handling and other NAS improvements
* !3063 Update yaml-cpp dependency handling
* !2989 NR gNB scheduler improvements for BWP operation

This MR removes limitations on BWP scheduler operation for which only
the information from the first UE of the list was taken into account. To
do so, I moved the VRB map check for DL and UL scheduler out of the
preprocessor and in the scheduler itself.

Closes: #769