Add .ini file for synthetic flow study in OO

Author: abmodak

MC/config/PWGLF/ini/GeneratorLF_SyntheFlowOO.ini

@@ -0,0 +1,6 @@
+[GeneratorExternal]
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGLF/pythia8/generator_pythia8_syntheFlowOO.C
+funcName=generator_syntheFlow()
+
+[GeneratorPythia8]
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_hi.cfg