Some basic LibTorch examples

1.) Creating tensors

creating_tensors.cc

2.) Slicing & reshaping

slicing_reshaping.cc

3.) Mathematical operations

math_opers.cc

4.) Tensor / std::vector related stuff

tensor_vector.cc

5.) CUDA Basics

cuda_basics.cc

6.) Autograd

(PyTorch's automatic differentiation engine) autograd.cc