feat: implemented errno, strtol. Started ustar. Reformatted headers and

code. Added some self-tests. Started prepwork for vfs.

include/myke/debug/debug.h

@@ -8,9 +8,17 @@
 #include <stdbool.h>
 
 #ifdef DEBUG_INIT
+
 #include <multiboot.h>
 
 void debug_store_info(struct multiboot_info *info);
+
+#endif
+
+#ifdef ENABLE_SELF_TEST
+
+void self_test();
+
 #endif
 
 void debug_backtrace(bool do_sync);