[logparser] fix documentation and add tests

Tobias Meiselrequested to merge
TobiasMeisel/ogstools:logparser_docu into main

Purpose

Small documentation fixes in logparser

  • preprocessing
  • postprocessing
  • visualization
  • HPC
  • application specific scripts
  • add your own category...

Common ToDos

  • API-breaking changes documented here
Edited by Tobias Meisel

Merge request reports