Simple macro for ITS tracks vs BC in ROF

[fprino]

This macro is intended as a starting point example for students doing service work on the ITS tracking vs ROF and the simulation of the time response of the alpide

[alibuild]

Error while checking build/O2/fullCI_slc9 for a98e9dc at 2026-06-25 07:11:

## sw/BUILD/O2-latest/log
CMake Error at cmake/O2ReportNonTestedMacros.cmake:89 (message):

Full log here.

[f3sch]

@fprino the new macro needs to be tested, e.g., adding in Detectors/ITSMFT/ITS/macros/test/CMakeLists.txt:

o2_add_test_root_macro(CheckITSTracksVsROF.C
                       PUBLIC_LINK_LIBRARIES ... # <- not sure which libraries need to be included here
                       LABELS its COMPILE_ONLY)