Adding a Fire state to Mario

[hunghvu]

Implement all the interaction and turtle shell features of Koopa. Here is some information based on Mario Wiki.

1. Hats and overalls change to a light cream color, while the shirt turns red.
2. If Mario or Luigi are in this form when the timer runs out, their losing sprites will use the fire palette.
3. Received this state after obtaining a Fire Flower.
4. Can throw fireballs (up to 2 on-screen at a time)..
5. The fireballs bounce along the ground and can defeat almost all enemies, including otherwise unbeatable ones such as Spinies
6. Using five fireballs to defeat Bowser and his copies is the only method that yields points (5000 points).
7. Turn back to small form (normal form) if takes damage.
8. If a Fire Flower is spawned but the player is reverted to their Small form before collecting it, it will merely change them to their Super form.

Update (Feb. 18, 2021): This issue is keep opened due to in completed tasks (strike through). The implementation of No.4 contains potential bugs as mentioned (#25). No.5 is partially implemented (#25). No. 8 is not tested (#25).