Moved Tools/GaudiTensorFlow from Gauss

As discussed in the review of Delphes (today Lamarr) I would move GaudiTensorFlow to the release of the LHCb package available to Sim10. GaudiTensorFlow is a slim interface between Gaudi C++ and TensorFlow C APIs. Because of the overhead in relying on the scheduler of TensorFlow, this approach only targets the deployment of complicated computing graphs (usually neural networks) that cannot be easily converted into lower-level formats and whose evaluation is sufficiently CPU-extensive to make the scheduling overhead (3-10 ms) negligible.