LibCore: Add includes for S_ISDIR on Windows

Author: https://github.com/R-Goc
Commit: https://github.com/LadybirdBrowser/ladybird/commit/c66eb5db113
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2482

Libraries/LibCore/ResourceImplementation.cpp

@@ -9,6 +9,10 @@
 #include <LibCore/ResourceImplementationFile.h>
 #include <LibCore/System.h>
 
+#if defined(AK_OS_WINDOWS)
+#    include <dirent.h>
+#endif
+
 namespace Core {
 
 static OwnPtr<ResourceImplementation> s_the;

Libraries/LibCore/ResourceImplementationFile.cpp

@@ -11,6 +11,10 @@
 #include <LibCore/ResourceImplementationFile.h>
 #include <LibCore/System.h>
 
+#if defined(AK_OS_WINDOWS)
+#    include <dirent.h>
+#endif
+
 namespace Core {
 
 ResourceImplementationFile::ResourceImplementationFile(String base_directory)