This MR aims to address warnings raised when compiling for ARM ( tested
with cross compilation, not directly on ARM hardware ).  The addressed
warnings are as follows:

- An unused variable in file oai_dfts_neon.c
- Wrong printf format specifier related to oai_cputime_t
- Wrong parameter type in qam64_qam64 call

This MR closes issue #844

Also, correctly set the pkg-config search path for libraries for the
target system. Also closes: #746

Prior to this commit, the include path for some libraries found through
pkg-config when cross compiling is not correct:

    $ grep include CMakeCache.txt
    blas_INCLUDEDIR:INTERNAL=/usr/include/x86_64-linux-gnu
    ...

This is because we did not tell pkg-config to search in the right path.
Since for cross-compilation, we install packages in parallel in the
system, override the primary directory where the .pc files located, in
the cross-compilation toolchain file for cmake.

Closes: #746

Change call to qam64_qam64 to use (short *) parameters as defined in the function declaration

Since long long is the bigger type ( 8 bytes ) of the two used ( long long and uint32_t ),
and long long is also available on ARM, change this parameter to always have this type.

This allows to always use format specifier '%lld' in the logs that use TICK_TO_US, which would otherwise return long long or uint32_t depending on architecture.

Integration: `2024.w41`

See merge request oai/openairinterface5g!3032

* !3006 Fix some sizeof and switch-case issues
* !3028 Add CMakePresets.json
* !3011 Aerial: cleanup unused code, avoid superfluous memcpy(), avoid L1 structures
* !3022 NR CSI-RS L1 refactoring → check CI
* !2935 Improvements in handling the beamforming procedure via FAPI
* !3026 NR ULSCH scheduler fix when using transform precoding
* !3031 CI: Increase test bitrates for 100 MHz scenario in SA-2x2 pipeline
* !3017 Fix SRS
* !2731 Implementation of 2-Step RA
* !3027 Add dockerized include what you use tool

3GPP 38.331: If absent, the UE applies the SCS as derived from the prach-ConfigurationIndex in RACH-ConfigGeneric (see tables Table 6.3.3.1-1, Table 6.3.3.1-2, Table 6.3.3.2-2 and Table 6.3.3.2-3, TS 38.211 [16]).

This procedure for msg1_SubcarrierSpacing NULL is not implemented, so we aplly the same value of UL SCS.

Introduce CMakePresests.json which is a simple way to perform incremental build using cmake

New configure resets were added:
 - default: Configure compilation with default options
 - tests: Same as above but ENABLE_TESTS and SANITIZE_ADDRESS is ON

New build presets were added:
 - 5gdefault: Build the software for NR rfsimulator test
 - default: same as 5gdefault
 - 4gdefault: Build the software for LTE rfsimulator test
 - tests: build all unit tests

To configure using configuration preset:

`cmake --preset <preset_name>`

To build using a build preset:

`cmake --build --preset <preset_name>`

use of number of SSBs transmitted before current one as fapi index, creation of a mapping vector from SSB to fapi index

Modify the UL/DL UDP iperf test cases to use a higher requested bitrate
for the scenario with 100 MHz bandwidth in the SA-2x2 pipeline. Adjust
gNB config file to allow for higher UL throughput.

Resolve error:

   nfapi/oai_integration/aerial/fapi_nvIPC.h:56:16: error: unknown type name ‘nvipc_params_t’
   56 | int nvIPC_Init(nvipc_params_t nvipc_params_s);

By including the header. Also, move the definiton of the struct to the
MAC, where it is actually stored, and out of the radio common_lib.h,
since this is not a radio (split 7/8) parameter.

We don't use CUDA (see previous commit). Further, the variables
referenced in this piece of code are not used later.

When compiling aerial, we compile without CUDA support (see e.g.,
docker/Dockerfile.gNB.aerial.ubuntu22). Hence, do not check for it in
aerial for the moment, we won't use it for the foreseeable future.

Since commit e6e25275, preamble_list is
an array, not a pointer. Hence, we don't need to call free().

In Aerial bindings (FAPI-Aerial), the NFAPI mode must be
NFAPI_MODE_AERIAL (otherwise, we would not be executing this code).
Hence, the switches don't make sense. Remove them.

The check can more easily be checked with

    git show <commit> --ignore-all-space

As is visible at the top of the patch, for compiling aerial_lib (the
binding FAPI-Aerial), we always add ENABLE_AERIAL. Thus, all the code
within ENABLE_AERIAL will be compiled; we can also simply take it out.