Implement magic and ranged weapons

[Azokah]

Task type: Implementation

Objective:

Implement ranged attacks

Points to take into account:

• Ranged combat can be performed with ranged weapons
• There must be a "Book" type of Ranged weapon that allows the Unit in its possession to cast spells(the ones that are contained in the book)

[Azokah]

This issue is a continuation of #10