io: implement path manipulation on windows

io/sys/windows/directory.c

@@ -0,0 +1,36 @@
+#include <blue/io/directory.h>
+
+struct b_directory {
+	char *abs_path;
+};
+
+struct z__b_directory_iterator {
+	int x;
+};
+
+enum b_status b_directory_open(
+	struct b_directory *root, const char *path, struct b_directory **out)
+{
+	return B_SUCCESS;
+}
+
+int b_directory_iterator_begin(
+	struct b_directory *directory, struct b_directory_iterator *it)
+{
+	return 0;
+}
+
+bool b_directory_iterator_next(struct b_directory_iterator *it)
+{
+	return false;
+}
+
+enum b_status b_directory_iterator_erase(struct b_directory_iterator *it)
+{
+	return B_SUCCESS;
+}
+
+bool b_directory_iterator_is_valid(const struct b_directory_iterator *it)
+{
+	return false;
+}