ENH: Update Autoscoper modernizing CUDA integration

This commit updates the Autoscoper project by replacing the deprecated
FindCUDA CMake module with the more robust and first-class support for
CUDA language. The changes leverage the following key features introduced
in various CMake versions:

- 3.8: Support by the Makefile Generators and the Ninja generator
  on Linux, macOS, and Windows
  See https://cmake.org/cmake/help/latest/release/3.8.html#cuda\

- 3.9: Support by the Visual Studio Generators for VS 2010 and above.
  See https://cmake.org/cmake/help/latest/release/3.9.html#languages

- 3.17: Introduction of FindCUDAToolkit
  See https://cmake.org/cmake/help/latest/release/3.17.html#modules
  and https://cmake.org/cmake/help/latest/module/FindCUDAToolkit.html#module:FindCUDAToolkit

* 3.18: A CMAKE_CUDA_ARCHITECTURES variable was added to specify CUDA output architectures.
  See https://cmake.org/cmake/help/latest/release/3.18.html#variables and https://cmake.org/cmake/help/latest/policy/CMP0104.html#policy:CMP0104

* 3.19: If CUDA compiler detection fails with user-specified CMAKE_CUDA_ARCHITECTURES or
  CMAKE_CUDA_HOST_COMPILER, an error is raised.
  See https://cmake.org/cmake/help/latest/release/3.19.html#other-changes

* 3.20: The CUDAARCHS environment variable was added for initializing CMAKE_CUDA_ARCHITECTURES.
  Useful in cases where the compiler default is unsuitable for the machine's GPU.
  See https://cmake.org/cmake/help/latest/release/3.20.html#languages

* 3.23: The CMAKE_CUDA_ARCHITECTURES variable and associated CUDA_ARCHITECTURES
  target property now support the all, and all-major values for CUDA toolkit 7.0+.
  See https://cmake.org/cmake/help/latest/release/3.23.html#variables

List of Autoscoper changes:

```
$ git shortlog 7df4365..22b1a41e0 --no-merges
Jean-Christophe Fillion-Robin (4):
      COMP: Update minimum CMake version from 3.8 to 3.17.5
      COMP: Modernize CUDA integration using FindCUDAToolkit CMake module
      COMP: Update minimum CMake version from 3.17.5 to 3.20.6
      COMP: Initialize list of CUDA architectures for maximum compatibility
```

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.13.4)
+cmake_minimum_required(VERSION 3.20.6)
 
 project(SlicerAutoscoperM)
 

SuperBuild.cmake

@@ -22,13 +22,32 @@ set(${proj}_DEPENDS
   )
 
 if(DEFINED ENV{SlicerAutoscoperM_CUDA_PATH})
-  set(ENV{CUDA_PATH} $ENV{SlicerAutoscoperM_CUDA_PATH})
+  file(TO_CMAKE_PATH "$ENV{SlicerAutoscoperM_CUDA_PATH}" _cuda_path)
+  if(CMAKE_GENERATOR MATCHES "Visual Studio")
+    # https://cmake.org/cmake/help/latest/variable/CMAKE_GENERATOR_TOOLSET.html#visual-studio-toolset-selection
+    if(NOT "${CMAKE_GENERATOR_TOOLSET}" MATCHES "cuda=")
+      set(_generator_toolset_key_value "cuda=${_cuda_path}")
+      if(NOT "${CMAKE_GENERATOR_TOOLSET}" STREQUAL "")
+        set(CMAKE_GENERATOR_TOOLSET "${CMAKE_GENERATOR_TOOLSET},${_generator_toolset_key_value}")
+      else()
+        set(CMAKE_GENERATOR_TOOLSET "${_generator_toolset_key_value}")
+      endif()
+    endif()
+  else()
+    # See https://cmake.org/cmake/help/latest/envvar/CUDACXX.html#cudacxx
+    set(ENV{CUDACXX} $ENV{_cuda_path}/bin/nvcc)
+  endif()
 endif()
 
-find_package(CUDA)
-if(CUDA_FOUND)
-  # Variable expected by find_package(CUDA) also used in Autoscoper
-  mark_as_superbuild(VARS CUDA_TOOLKIT_ROOT_DIR PROJECTS Autoscoper-CUDA)
+include(CheckLanguage)
+check_language(CUDA)
+if(CMAKE_CUDA_COMPILER)
+  # Variable expected by CUDA language also used in Autoscoper
+  if(CMAKE_GENERATOR MATCHES "Visual Studio")
+    mark_as_superbuild(VARS CMAKE_GENERATOR_TOOLSET PROJECTS Autoscoper-CUDA)
+  else()
+    mark_as_superbuild(VARS CMAKE_CUDA_COMPILER PROJECTS Autoscoper-CUDA)
+  endif()
   list(APPEND ${proj}_DEPENDS
     Autoscoper-CUDA
     )

SuperBuild/External_Autoscoper.cmake

@@ -35,7 +35,7 @@ if(NOT DEFINED ${proj}_DIR AND NOT ${SUPERBUILD_TOPLEVEL_PROJECT}_USE_SYSTEM_${p
 
   ExternalProject_SetIfNotDefined(
     Slicer_${proj}_GIT_TAG
-    "7df4365ecb1919fa10cb3e67a836467db0686f2e"
+    "22b1a41e0b7b6a2de330f436d8834d1a0b96a3ac"
     QUIET
   )