Added new features

[tang0614]

New features added

1. Koopa can fly, and will change to walk "mode" after being hit by Mario.
2. Mario become bigger after eating mushroom.
3. Add Lathiu to drop Spiny to mario.
4. Add Paranha plants.
   I followed the youtube from and beginning and fixed some bugs before adding these features

###To run the game

1. Clone repository
2. Run npm i -y
3. Run npm start
4. Go to http://localhost:5000

[pomle]

I just saw this PR right now. I feel so bad for not having seen it earlier and replying!