add new converter

src/convert_time.c

@@ -4,3 +4,8 @@ double converter_sec_to_min(double sec){
     double time = sec / 60;
     return time;
 }
+
+double converter_min_to_sec(double min){
+    double time = min * 60;
+    return time;
+}

src/convert_time.h

@@ -2,5 +2,6 @@
 #define THEADMIRALS_CONVERT_TIME_H
 
 double converter_sec_to_min(double sec);
+double converter_min_to_sec(double min);
 
 #endif //THEADMIRALS_CONVERT_TIME_H