adds build presets for demos

CMakePresets.json

@@ -63,5 +63,31 @@
                 "CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
             }
         }
+    ],
+    "buildPresets": [
+        {
+            "name": "Debug",
+            "configurePreset": "Debug"
+        },
+        {
+            "name": "Debug32",
+            "configurePreset": "Debug32"
+        },
+        {
+            "name": "Release",
+            "configurePreset": "Release"
+        },
+        {
+            "name": "Release32",
+            "configurePreset": "Release32"
+        },
+        {
+            "name": "MinSizeRel",
+            "configurePreset": "MinSizeRel"
+        },
+        {
+            "name": "MinSizeRel32",
+            "configurePreset": "MinSizeRel32"
+        }
     ]
 }