Enemy Unit and Stronghold Updates

• Scene 3: Crenel Canyon: Strongholds updated
• Scene 4: Mylesia: Strongholds updated
• Scene 5: Zenobian Border: Strongholds updated
• Scene 7: Gunther Piedmont: Strongholds updated
• Scene 10: Crenel Canyon: Enemy Units and Strongholds added
• Scene 11: Mylesia: Enemy Units added, Strongholds updated
• Scene 14: Audvera Heights: Enemy Units and Strongholds added
• Scene 15: Mount Ithaca: Enemy Units and Strongholds added

Thanks to Ashanark for these contributions.