Add in Torch beat detection to Madmom

[larryfenn]

We did some stuff at the burn but it required some wierd setup.py shenanigans- need to do this correctly through Visual Studio

[larryfenn]

I've gotten this to work on the burn laptop, but there are a few serious issues with making this reproducible on other machines:

• The model files are not included in the repo, and have to be distributed separately.
• Due to how we are invoking the python process, the model files specifically have to go inside Spectrum/Madmom/env/Scripts (i.e. the full path to reg_latest.ckpt is Spectrum/Madmom/env/Scripts/madmom/piracy/tcn_models/reg_latest.ckpt)

[larryfenn]

I was mistaken on bullet point 1 there; reg_latest.ckpt is in tcn_models, and the models submodule of Madmom is correctly included, but step checkpoints (i.e. tcn_models/reg/step_010000.ckpt) are not included.