Add more mons and mhp

[MaisaMilena]

• Add Tupitree, Lela and Moshy
• Add mhp to all Mons

// A game object
T Mons.Object
| Mons.Object.new(
  kin: Mons.Kind, // represent the type of the object
  dir: Mons.Dir,  // direction the object is facing
  pad: Mons.Pad,  // movement key pad
  ani: U32,       // number of walk frames to animate
  mhp: U32,       // object's maximum health points <<<<<< here
  dmg: U32        // object's current health points
);