Add location of germanium detectors in global coordinates to output

[gipert]

This is needed to simplify applying HPGe detector models in post-processing. Need to think about the format and whether we want to add this with the analysis manager or in the wrapper.

[gipert]

Maybe the best implementation of this is:

• create a mapping dector_name -> location for every registered detector (see vertex confinement code) somewhere in remage-cpp
• write it to disk similarly as done for process names
• in the wrapper, convert it to an LH5 struct

We could use the same approach with the process names