Adding Tesla Coil Tower and Arc VFX

New tower!

Assets/_Project/Scripts/Core/Enums.cs

@@ -12,6 +12,7 @@ namespace TD.Core
         Fire      = 3,
         Poison    = 4,
         Holy      = 5,
+        Electric  = 6,
     }
 
     /// <summary>
@@ -40,6 +41,9 @@ namespace TD.Core
         Splash = 1,
         /// <summary>Chains damage to up to ChainCount additional nearby enemies.</summary>
         Chain  = 2,
+        /// <summary>Hits EVERY enemy within the tower's Range each attack (e.g. Tesla Coil).
+        /// Hitscan only — pairs with a null ProjectilePrefab.</summary>
+        AllInRange = 3,
     }