cbmreco: Add support to store results to file

Adds rudimentary support to store reconstruction results via cbmreco:

• Adds RecoIO class that contains results from one pass of the reconstruction (called IO as i plan to use it as possible input to reconstruction in addition to timeslices)
• Add Archive class to store one or more reconstructed timeslices to file
• Add --output flag to specify output-file, and add --write-per-timeslice flag to write results once per each timeslice.

algo/base/Options.cxx

@@ -59,6 +59,10 @@ Options::Options(int argc, char** argv)
   po::options_description generic("Other options");
   // clang-format off
   generic.add_options()
+    ("output,o", po::value(&fOutputFile)->default_value("")->value_name("<file>"),
+      "write results to file")
+    ("split-output-per-ts,S", po::bool_switch(&fSplitOutputPerTS)->default_value(false),
+      "Write results to file per timeslice (resulting files are named <file>_<tsnr>). Requires -o.")
     ("device,d", po::value(&fDevice)->default_value("cpu")->value_name("<device>"),
       "select device (cpu, cuda0, cuda1, hip0, ...)")
     ("log-level,l", po::value(&fLogLevel)->default_value(info)->value_name("<level>"),
@@ -67,7 +71,7 @@ Options::Options(int argc, char** argv)
       "URI specifying monitor output (e.g. file:/tmp/monitor.txt, influx1:login:8086:cbmreco_status). Prints to cout when no argument is given. Monitor is disabled when flag is not set.")
     ("log-file,L", po::value(&fLogFile)->value_name("<file>"),
       "write log messages to file")
-    ("output,o", po::value(&fOutputTypes)->multitoken()->default_value({RecoData::Hit})->value_name("<types>"),
+    ("output-types,O", po::value(&fOutputTypes)->multitoken()->default_value({RecoData::Hit})->value_name("<types>"),
       "comma seperated list of reconstruction output types (hit, digi, ...)")
     ("steps", po::value(&fRecoSteps)->multitoken()->default_value({Step::Unpack, Step::LocalReco})->value_name("<steps>"),
       "comma seperated list of reconstruction steps (upack, digitrigger, localreco, ...)")