Update readout generation

[juanangp]

Updating readout generation:

• The readout is not generated at InitFromConfigFile, only the rml metadata is readed.
• Some metadata members from TRestDetectorReadout have been moved to TRestDetectorReadoutModule : fFirstDaqChannel, fMappingNodes and fDecoding since they belong to TRestDetectorReadoutModule, e.g. decoding happens there.
• Added option to update the decoding after the readout has been generated, therefore to avoid long readout generation just for decoding test, a macro has been added, see an example below:

TFile *f = TFile::Open("myReadout.root", "UPDATE");
TRestDetectorReadout* readout = (TRestDetectorReadout*)f->Get("readoutName");
  for( int p = 0; p < readout->GetNumberOfReadoutPlanes(); p++ ){
    TRestDetectorReadoutPlane *plane = readout->GetReadoutPlane( p );
      for( int m = 0; m < plane->GetNumberOfModules(); m++ ) {
        TRestDetectorReadoutModule* module = &(*plane)[m];
        module->SetDecodingFile(decodingFile);
      }
  }
readout->Write("newDecoding");
f->Close();

[jgalan]

Perhaps SetDecodingFile could already call UpdateDecoding?

[juanangp]

Perhaps SetDecodingFile could already call UpdateDecoding?

Done