Improve Weapon Search

[Franklin Bitencourt Dantas]

Feature implemented

The current feature is making the survivor search the best weapon only once, they'l use it until it breaks.

Improvement of that feature

Make the survivor get hand-crafted weapons, get guns if found, and change the current weapon if the survivor finds a better one.
Also, maybe create a separate file like with #2 .  

Why is this Improvement needed?

It'll probably increase the survivors' survivability and make them more dangerous.

Goals

• Search other types of weapon.
• Get guns/ammo if found.
• Change current weapon when there is a better one.
• Drop the weapon on the ground when die instead of in the inventory.