Restore libcudacxx dialect presets. (#6705)

These were removed in #6693.

Author: alliepiper

CMakePresets.json

@@ -128,6 +128,24 @@
         "LIBCUDACXX_ENABLE_LIBCUDACXX_TESTS": true
       }
     },
+    {
+      "name": "libcudacxx-cpp17",
+      "displayName": "libcu++: C++17",
+      "inherits": "libcudacxx",
+      "cacheVariables": {
+        "CMAKE_CXX_STANDARD": "17",
+        "CMAKE_CUDA_STANDARD": "17"
+      }
+    },
+    {
+      "name": "libcudacxx-cpp20",
+      "displayName": "libcu++: C++20",
+      "inherits": "libcudacxx",
+      "cacheVariables": {
+        "CMAKE_CXX_STANDARD": "20",
+        "CMAKE_CUDA_STANDARD": "20"
+      }
+    },
     {
       "name": "libcudacxx-nvrtc",
       "inherits": "libcudacxx",
@@ -136,6 +154,24 @@
         "CMAKE_CUDA_ARCHITECTURES": "70"
       }
     },
+    {
+      "name": "libcudacxx-nvrtc-cpp17",
+      "displayName": "libcu++: NVRTC C++17",
+      "inherits": "libcudacxx-nvrtc",
+      "cacheVariables": {
+        "CMAKE_CXX_STANDARD": "17",
+        "CMAKE_CUDA_STANDARD": "17"
+      }
+    },
+    {
+      "name": "libcudacxx-nvrtc-cpp20",
+      "displayName": "libcu++: NVRTC C++20",
+      "inherits": "libcudacxx-nvrtc",
+      "cacheVariables": {
+        "CMAKE_CXX_STANDARD": "20",
+        "CMAKE_CUDA_STANDARD": "20"
+      }
+    },
     {
       "name": "cub-base",
       "hidden": true,
@@ -333,6 +369,16 @@
         "libcudacxx.test.c2h_all"
       ]
     },
+    {
+      "name": "libcudacxx-cpp17",
+      "configurePreset": "libcudacxx-cpp17",
+      "inherits": "libcudacxx"
+    },
+    {
+      "name": "libcudacxx-cpp20",
+      "configurePreset": "libcudacxx-cpp20",
+      "inherits": "libcudacxx"
+    },
     {
       "name": "libcudacxx-codegen",
       "configurePreset": "libcudacxx-codegen",
@@ -354,6 +400,16 @@
         "libcudacxx.nvrtcc"
       ]
     },
+    {
+      "name": "libcudacxx-nvrtc-cpp17",
+      "configurePreset": "libcudacxx-nvrtc-cpp17",
+      "inherits": "libcudacxx-nvrtc"
+    },
+    {
+      "name": "libcudacxx-nvrtc-cpp20",
+      "configurePreset": "libcudacxx-nvrtc-cpp20",
+      "inherits": "libcudacxx-nvrtc"
+    },
     {
       "name": "cub-cpp17",
       "configurePreset": "cub-cpp17"
@@ -437,6 +493,16 @@
         }
       }
     },
+    {
+      "name": "libcudacxx-ctest-cpp17",
+      "configurePreset": "libcudacxx-cpp17",
+      "inherits": "libcudacxx-ctest"
+    },
+    {
+      "name": "libcudacxx-ctest-cpp20",
+      "configurePreset": "libcudacxx-cpp20",
+      "inherits": "libcudacxx-ctest"
+    },
     {
       "name": "libcudacxx-lit",
       "configurePreset": "libcudacxx",
@@ -451,11 +517,31 @@
         "outputOnFailure": false
       }
     },
+    {
+      "name": "libcudacxx-lit-cpp17",
+      "configurePreset": "libcudacxx-cpp17",
+      "inherits": "libcudacxx-lit"
+    },
+    {
+      "name": "libcudacxx-lit-cpp20",
+      "configurePreset": "libcudacxx-cpp20",
+      "inherits": "libcudacxx-lit"
+    },
     {
       "name": "libcudacxx-nvrtc",
       "configurePreset": "libcudacxx-nvrtc",
       "inherits": "libcudacxx-lit"
     },
+    {
+      "name": "libcudacxx-nvrtc-cpp17",
+      "configurePreset": "libcudacxx-nvrtc-cpp17",
+      "inherits": "libcudacxx-nvrtc"
+    },
+    {
+      "name": "libcudacxx-nvrtc-cpp20",
+      "configurePreset": "libcudacxx-nvrtc-cpp20",
+      "inherits": "libcudacxx-nvrtc"
+    },
     {
       "name": "cub-base",
       "hidden": true,