实现一个 EatMan

说明:实现一个 EatMan，EatMan 可以有以下一些行为

1. EatMan('Hank'); 输出

   • Hi This is Hank!

2. EatMan('Hank').eat('dinner').eat('supper'); 输出

   • Hi This is Hank!
   • Eat dinner~
   • Eat supper~

3. EatMan('Hank').eat('dinner').eatFirst('lunch'); 输出

   • Eat lunch~
   • Hi This is Hank!
   • Eat dinner~

4. EatMan('Hank').eat('dinner').eatFirst('lunch').eatFirst('breakfast'); 输出

   • Eat breakfast~
   • Eat lunch~
   • Hi This is Hank!
   • Eat dinner~