UNICADOworkflow: - update src for running RFD

Andirequested to merge
origin/feature/workflow_fixes into develop

update src for running RFD

  • add "existing_component_geometries" folder to the geometry_data directory
  • add check for existing geometry folder -> Warning is implemented
  • change some wrong workflow log-file names inside the scripts of the workflow
  • delete convergenceLoop checks -> not longer required

Tested by @AndiGob in executable mode and in python script mode -> no errors occurred -> workflow behavior is as excpected

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