store detector global coordinates, deduplicate auxiliary tables and convert to LH5 structs

[ManuelHu]

• store the global position of all germanium detectors into a detector_origins table
  • for this, some code from vertex confinement is moved out to RMGNavigationTools
• in post-processing, deduplicate tables with information that is generate on all threads (such as process id to name mappings, detector coordinates)
• convert these deduplicated tables to LH5 structs (when reshaping is on, flat output keeps tables for these):

├── detector_origins · struct{det1,det2} 
│   ├── det1 · struct{xloc,yloc,zloc} 
│   │   ├── xloc · real 
│   │   ├── yloc · real 
│   │   └── zloc · real 
│   └── det2 · struct{xloc,yloc,zloc} 
│       ├── xloc · real 
│       ├── yloc · real 
│       └── zloc · real 

[gipert]

Very nice! I had a quick look and it seems good to go to me.

Could you update PR title and description with more details about the changes?

[gipert]

Can we merge this? I want to update #435.