DPL Analysis: add RNTuple arrow::Dataset support

As part of the changes, move the actual logic which serialises /
deserialised things to plugins so that we do not need to depend
or RNTuple in production code.

Include an initial converter to go from AO2Ds to RNTuple based files.

Author: ktf

Framework/AnalysisSupport/CMakeLists.txt

@@ -24,6 +24,16 @@ o2_add_library(FrameworkAnalysisSupport
                PRIVATE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_LIST_DIR}/src
                PUBLIC_LINK_LIBRARIES O2::Framework ${EXTRA_TARGETS} ROOT::TreePlayer)
 
+o2_add_library(FrameworkAnalysisRNTupleSupport
+               SOURCES src/RNTuplePlugin.cxx
+               PRIVATE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_LIST_DIR}/src
+               PUBLIC_LINK_LIBRARIES O2::Framework ${EXTRA_TARGETS} ROOT::ROOTNTuple ROOT::ROOTNTupleUtil)
+
+o2_add_library(FrameworkAnalysisTTreeSupport
+               SOURCES src/TTreePlugin.cxx
+               PRIVATE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_LIST_DIR}/src
+               PUBLIC_LINK_LIBRARIES O2::Framework ${EXTRA_TARGETS} ROOT::TreePlayer)
+
 o2_add_test(DataInputDirector NAME test_Framework_test_DataInputDirector
                SOURCES test/test_DataInputDirector.cxx
                COMPONENT_NAME Framework