modified:   CMakeLists.txt

include IRT headers

add IRT aux file output; use Detector constant accessors; formatting

new file:   scripts/createIRTconfig.py

add CI job for IRT aux file creation

remove WITH_IRT

revert comments

add build option and macro `IRT_AUXFILE`

clang-format

modified:   src/DRICH_geo.cpp

modified:   src/DRICH_geo.cpp

modified:   src/DRICH_geo.cpp

switch to raw pointers, since ROOT is smart enough

create IRT objects iff `createIrtFile==1`

set refractive indices for IRT

clang-format

convince clang-format to not mess up complicated `Transform3D`s

modify comments