GPU Support: Lightweight mode

GPU Support

As of 2.0.2, LAVA now offers the use of DNNs for text recognition on the timer. This allows for the timer to be read past 20 minutes and with greater accuracy, but at the cost of computing efficiency. To run the model on a GPU, follow this setup guide or a similar guide for other GPU manufacturers in order to run OpenCV's DNN module with GPU support, then deselect Lightweight Mode when running the tool. As I run LAVA on a CPU machine, I can't specify the difference in speed or fix any bugs that pop up. It's an experimental feature so please treat it as such and add any feedback/issues to the repo