Change fusee folder naming

fusee/fusee-primary/src/sd_utils.c

@@ -0,0 +1,10 @@
+#include "sd_utils.h"
+
+int read_sd_file(void *dst, const char *filename) {
+    /* TODO: Implement this function. */
+    (void)(dst);
+    (void)(filename);
+    
+    /* Fail, because this function is unimplemented. */
+    return 0;
+}