D13711: Support import of ROOT (CERN) TH1 histograms

[Christoph Roick]

croick created this revision.
croick added reviewers: sgerlach, asemke, fkristof.
Restricted Application added a project: KDE Edu.
Restricted Application added a subscriber: kde-edu.
croick requested review of this revision.

REVISION SUMMARY
  The data analysis framework ROOT (https://root.cern.ch/)
  provides its own file type containing different types of
  histograms.
  To prevent the use of the native library, a light ROOTHist
  class gives access to the required data of the histograms.
  
  - depends on LZIP and LZ4 compression
  - no export module foreseen so far
  - test data will be provided in a separate commit

TEST PLAN
  Open a new project and import histograms into a workbook.
  The underflow bin can be skipped by increasing the start row.

REPOSITORY
  R262 LabPlot

BRANCH
  ROOTImport

REVISION DETAIL
  https://phabricator.kde.org/D13711

AFFECTED FILES
  CMakeLists.txt
  src/CMakeLists.txt
  src/backend/datasources/LiveDataSource.cpp
  src/backend/datasources/LiveDataSource.h
  src/backend/datasources/filters/ROOTFilter.cpp
  src/backend/datasources/filters/ROOTFilter.h
  src/backend/datasources/filters/ROOTFilterPrivate.h
  src/kdefrontend/datasources/ImportFileDialog.cpp
  src/kdefrontend/datasources/ImportFileWidget.cpp
  src/kdefrontend/datasources/ImportFileWidget.h
  src/kdefrontend/datasources/ROOTOptionsWidget.cpp
  src/kdefrontend/datasources/ROOTOptionsWidget.h
  src/kdefrontend/ui/datasources/rootoptionswidget.ui

To: croick, sgerlach, asemke, fkristof
Cc: kde-edu, narvaez, apol
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