Integration: `2024.w26` (part 2)

See merge request oai/openairinterface5g!2823

* !2794 Power control changes
* !2816 Fix test asan errors
* !2820 fix(T): some missing dependencies on T
* !2714 FAPI P5 Refactoring and unitary test creation
* !2819 Prevent unnecessary assertions for invalid DCI at NR UE
* !2825 Do not extract CSI report if PUCCH format 2 CRC check fails in polar decoder
* !2805 GUAMI decoding and storing in RRC UE context fixed

Merge remote-tracking branch 'origin/NR_UE_prevent_unnecessary_assertions' into integration_2024_w26b

This fix prevents the scheduler to process a wrong CSI feedback message, for example, it avoids the scheduler to compute a wrong MCS from CQI or a wrong RI from CQI

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

Integration: `2024.w26`

See merge request oai/openairinterface5g!2815

* !2750 Add Ubuntu 24.04 to/retire Ubuntu 18.04 from supported distributions, use Ubuntu 22 for CI container images
* !2793 Option '-O' in phy simulators to provide a configuration file
* !2797 Increase TX_DATA.request TB buffer size, fix compute_PDU_Length
* !2814 Update documentation and FEATURE SET
* !2720 Remove thread-pool Makefile
* remove extra log

This reverts a change in commit
ccba7c87. There is no real reason to
show this warning (the gNB will work just fine, simply not schedule
since no free HARQ) and it makes users unsure.

Extract thread-pool into a separate CMake library.
Extract utils into a separate CMake library.

- come straight to point: how to clone (don't talk about git config)
- refer to contributing documentation where necessary instead of
  repeating information

- CellGroupConfig is handled through DU (hence MAC)
- mention number of DUs/CU-UPs handled per CU-CP
- mention number of UEs handled
- take out BWPs, as we don't support it properly
- typos

Fixed delta MPR.
Fixed an error in PUCCH PC_MAX calculation.

Update instructions and CI for cross-compilation on Ubuntu 22.
Note that for the dockerfile, we use egrep -L which has changed and does
not exit with code 0 on no match. Instead, use -vqz to invert return
code (0 if nothing found, otherwise 1).

iperf2 2.0.13, used in Ubuntu 20, does not need a "back channel"; we can
therefore use it in feMBMS (which does a broadcast, without back
channel). Ubuntu 22 comes with 2.1.5, which seems to require a back
channel, or at least, we cannot use it reliably in feMBMS. Hence,
downgrade to older iperf2 version.
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>