4v4 nanoblade + V-Fix

Features:

• Randomized heroes: Reinhardt, Ana, Genji, McCree.
• Increase max hp and damage when there's a player number difference.
• Start with ultimate.

Added:

• Reinhardt can now cancel charge ability.
• Reinhardt generate shield when charge (Its based on his armor!).
• Ana can now self nanoboost.
• Support for Map: (Workshop Island, Workshop Island (Night)).