Fix Windows build

Author: harry-cpp

build/BuildWindowsTask.cs

@@ -10,6 +10,10 @@ public sealed class BuildWindowsTask : FrostingTask<BuildContext>
     public override void Run(BuildContext context)
     {
         var buildWorkingDir = "basis_universal/";
+
+        // needed until https://github.com/BinomialLLC/basis_universal/pull/391 gets merged
+        context.ReplaceRegexInFiles("basis_universal/CMakeLists.txt", "project(basisu)", "project(basisu C CXX)\nset(CMAKE_CXX_STANDARD 17)");
+
         context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "-DSAN=ON CMakeLists.txt" });
         context.ReplaceTextInFiles("basis_universal/basisu.vcxproj", "MultiThreadedDLL", "MultiThreaded");
         context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "--build . --config release" });