Common: add OTF inis for special 2025 runs

MC/config/common/ini/pythia8_NeNe_536.ini

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+[Diamond]
+width[2]=6.0
+
+[GeneratorExternal]
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+funcName=generator_pythia8_ALICE3()
+
+[GeneratorPythia8]
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_NeNe_536.cfg

MC/config/common/ini/pythia8_OO_536.ini

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+[Diamond]
+width[2]=6.0
+
+[GeneratorExternal]
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+funcName=generator_pythia8_ALICE3()
+
+[GeneratorPythia8]
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_OO_536.cfg

MC/config/common/ini/pythia8_pO_961.ini

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+[Diamond]
+width[2]=6.0
+
+[GeneratorExternal]
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+funcName=generator_pythia8_ALICE3()
+
+[GeneratorPythia8]
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_pO_961.cfg

MC/config/common/ini/tests/pythia8_NeNe_536.C

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+int External() {
+  std::string path{"o2sim_Kine.root"};
+
+  TFile file(path.c_str(), "READ");
+  if (file.IsZombie()) {
+    std::cerr << "Cannot open ROOT file " << path << "\n";
+    return 1;
+  }
+
+  auto tree = (TTree *)file.Get("o2sim");
+  if (!tree) {
+    std::cerr << "Cannot find tree o2sim in file " << path << "\n";
+    return 1;
+  }
+  std::vector<o2::MCTrack> *tracks{};
+  tree->SetBranchAddress("MCTrack", &tracks);
+
+  auto nEvents = tree->GetEntries();
+  if (nEvents == 0) {
+    std::cerr << "No event of interest\n";
+    return 1;
+  }
+  return 0;
+}

MC/config/common/ini/tests/pythia8_OO_536.C

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+int External() {
+  std::string path{"o2sim_Kine.root"};
+
+  TFile file(path.c_str(), "READ");
+  if (file.IsZombie()) {
+    std::cerr << "Cannot open ROOT file " << path << "\n";
+    return 1;
+  }
+
+  auto tree = (TTree *)file.Get("o2sim");
+  if (!tree) {
+    std::cerr << "Cannot find tree o2sim in file " << path << "\n";
+    return 1;
+  }
+  std::vector<o2::MCTrack> *tracks{};
+  tree->SetBranchAddress("MCTrack", &tracks);
+
+  auto nEvents = tree->GetEntries();
+  if (nEvents == 0) {
+    std::cerr << "No event of interest\n";
+    return 1;
+  }
+  return 0;
+}

MC/config/common/ini/tests/pythia8_pO_961.C

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+int External() {
+  std::string path{"o2sim_Kine.root"};
+
+  TFile file(path.c_str(), "READ");
+  if (file.IsZombie()) {
+    std::cerr << "Cannot open ROOT file " << path << "\n";
+    return 1;
+  }
+
+  auto tree = (TTree *)file.Get("o2sim");
+  if (!tree) {
+    std::cerr << "Cannot find tree o2sim in file " << path << "\n";
+    return 1;
+  }
+  std::vector<o2::MCTrack> *tracks{};
+  tree->SetBranchAddress("MCTrack", &tracks);
+
+  auto nEvents = tree->GetEntries();
+  if (nEvents == 0) {
+    std::cerr << "No event of interest\n";
+    return 1;
+  }
+  return 0;
+}

MC/config/common/pythia8/generator/pythia8_NeNe_536.cfg

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+### NeNe beams
+Beams:idA = 1000100200  # Neon
+Beams:idB = 1000100200  # Neon
+Beams:eCM = 5360.0                ### energy
+
+Beams:frameType = 1
+ParticleDecays:limitTau0 = on
+ParticleDecays:tau0Max = 10.      ### match alice: 1cm/c = 10.0mm/c
+
+### To avoid refitting, add the following lines to your configuration file:
+HeavyIon:SigFitNGen = 0
+HeavyIon:SigFitDefPar = 2.15,18.42,0.33
+
+Random:setSeed = on

MC/config/common/pythia8/generator/pythia8_OO_536.cfg

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+### OO beams
+Beams:idA = 1000080160
+Beams:idB = 1000080160           
+Beams:eCM = 5360.0                ### energy
+
+Beams:frameType = 1
+ParticleDecays:limitTau0 = on
+ParticleDecays:tau0Max = 10.      ### match alice: 1cm/c = 10.0mm/c
+
+### Save some CPU at init of jobs
+### To avoid refitting, add the following lines to your configuration file:
+HeavyIon:SigFitNGen = 0
+HeavyIon:SigFitDefPar = 2.15,18.42,0.33
+
+Random:setSeed = on

MC/config/common/pythia8/generator/pythia8_pO_961.cfg

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+### OO beams
+Beams:frameType 2       # back-to-back beams of different energies and particles
+Beams:idA 2212          # proton
+Beams:idB 1000080160    # Oxygen
+Beams:eA 6800.          # Energy of proton beam in GeV moving in the +z direction
+Beams:eB 3400.          # Energy in GeV per Oxygen nucleon (6.8 Z TeV) moving in the -z direction
+
+ParticleDecays:limitTau0 = on
+ParticleDecays:tau0Max = 10.      ### match alice: 1cm/c = 10.0mm/c
+
+### To avoid refitting, add the following lines to your configuration file:
+HeavyIon:SigFitNGen = 0
+HeavyIon:SigFitDefPar = 2.17,17.56,0.30
+
+Random:setSeed = on