CMake 3.31 breaks cuda build of qsim

[fdmalone]

Describe the issue

The CMake module FindCUDA is deprecated as of v3.27 of CMake but it's still in use here:
https://github.com/quantumlib/qsim/blob/v0.21.0/pybind_interface/decide/CMakeLists.txt#L19, apparently the correct thing to do is outlined here: https://cmake.org/cmake/help/latest/module/FindCUDA.html

What version of qsim are you using?

master

How can the issue be reproduced?

on master, on a gpu:

export CUQUANTUM_DIR=/opt/apps/cuquantum/
export CUQUANTUM_ROOT=/opt/apps/cuquantum/
make
export CUDAARCHS="70;80;89;90"
pip install .

returns:

        By not providing "FindCUDA.cmake" in CMAKE_MODULE_PATH this project has
        asked CMake to find a package configuration file provided by "CUDA", but
        CMake did not find one.

        Could not find a package configuration file provided by "CUDA" with any of
        the following names:

          CUDAConfig.cmake
          cuda-config.cmake

        Add the installation prefix of "CUDA" to CMAKE_PREFIX_PATH or set
        "CUDA_DIR" to a directory containing one of the above files.  If "CUDA"
        provides a separate development package or SDK, be sure it has been
        installed.

Attempting to manually point to FindCUDA.cmake raises the error:

   The FindCUDA module has been removed by policy CMP0146.

Rolling back to the last tagged release I can successfully build with cuda / cuquantum support.

[mhucka]

Fixed in PR #783.