Adding layer

include/components/walk_action.h

@@ -15,6 +15,7 @@ struct walk_action
     gc_component base;
     int acceleration;
     int max_acceleration;
+    int decceleration;
 };
 
 extern const struct walk_action walk_action;

include/my.h

@@ -6,6 +6,8 @@
 */
 #pragma once
 
+int my_str_islower_or_num(const char *str);
+
 int my_printf(const char *str, ...);
 
 int count_valid_queens_placements(int n);