fix: remove LCG99 from linux-lcg workflow

See merge request !55

Too old dd4hep 1.15 fails on certain visAttributes

Xmllint both before and after build

See merge request !54

New github workflows: convert geometry etc, artifacts

See merge request !51

Resolve "dRICH: produce IRT geometry objects"

Closes #17

See merge request !31

modified:   CMakeLists.txt

https://github.com/c-dilks/drich-dev/commit/8a32e523570b207af769f6b594b0d837eec7221f

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