Add readfolder();

Done by a char array, a bit storage based attribute list (only does dir or nodir for now), and an amount of how many files there are

Current limit: 250 files per folder

source/meme/utils.h

@@ -1,4 +1,5 @@
 #pragma once
 
 void utils_gfx_init();
-void utils_waitforpower();
+void utils_waitforpower();
+int readfolder(char *items[], unsigned int *muhbits);