feataure add hp command

main.cpp

@@ -297,6 +297,12 @@ void gameLoop() {
             }
         }
 
+        if (commandBuffer.compare(0, endOfVerb, "hp") == 0) {
+            wrapOut("Current HP: " + std::to_string(currentState->getHP()));
+            wrapEndPara();
+            commandOk = true;
+        }
+
         // check get <keyword>, drop <keyword>, eat <keyword>
         if (!commandOk) {
             std::vector<std::string> words = split(commandBuffer);