Catch exception from writer module init

Created by: dominikwerder

Description of work

• Catch exceptions from writer module initialization
• Add more details via throw_with_nested in some places
• Attempt HDF5 flush and close only given a valid file handle to avoid the corresponding exceptions in that case
• Factored body of loop into new function extractStreamInformationFromJsonForSource

Issue

Closes #253 (closed)

Acceptance Criteria

• Wrong settings especially in the stream children of nexus_structure should now be caught