- bladerf depends on UTIL via common_lib.h
- use header guards

- Add CMakeLists.txt to build all T tracer user tools
- Previous Makefiles are retained in common/utils/T: you can do
  $ cd common/utils/T/tracer
  $ make # all executables are there
  or also
  $ mkdir build && cd build
  $ cmake .. -GNinja
  $ ninja T_tools # all executables are in build/common/utils/T/tracer

- Fix memory leaks detected by ASan
- Initialize variables that are flagged by compiler
- C struct initializer: x:y needs to be .x=y

We disable for two reasons:
- in the CI, with clang, it did not build once, but I cannot reproduce
  locally (even with clang)
- we want to maintain to be able to build without T tracer, so in one
  pipeline, we have to build without it. What a lucky coincidence!

USRP code uses the logging module, which has a dependency on T, if
configured. Therefore, include UTIL to satisfy this dependency

- UTIL: has LOG which brings as (public) dependency T, so link it publicly
- Move T to top to ensure all targets can have it

 * New folder named  XNAP created inside openair2
 * Added ASN File(38423.asn) for XNAP  and .cmake(38423.cmake) for the same inside XNAP.
 * CMakeLists.txt files changed to support .C and .H file generation for XNAP

The ASN.1 RRC (4G/5G) headers are not needed

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

integration_2023_w27

See merge request oai/openairinterface5g!2218

* !2163 CI: use same Ping functionality everywhere
* !2173 Remove RFSIMULATOR environment variable; rename two env vars, add one; documentation
* !2205 Add support for NR band n48
* !2211 Fix bug
* !2213 CI: AW2S pipeline - disable retransmissions check
* !2133 Add E2 agent
* !2208 Bugfix when deleting a SDAP entity
* !2195 remove redundant copies of pdu sessions list
* !2174 Refactor CMakeLists.txt
* !2167 CI: Creation of pipeline for OAIUE testing
* !2165 improvements in CI config files