Added a benchmark tool

Source/Problem1.cpp

@@ -34,7 +34,6 @@
 uint64_t Problem1::MAX_NUMBER = 1000;
 
 Problem1::Problem1() : Problem("What is the sum of all the multiples of 3 or 5 that are less than 1000?"), fullSum(0){
-
 }
 
 void Problem1::solve(){
@@ -84,3 +83,9 @@ uint64_t Problem1::getSum() const{
 	}
 	return fullSum;
 }
+
+void Problem1::reset(){
+	Problem::reset();
+	fullSum = 0;
+	numbers.clear();
+}