Add ranged combat support

* Clean up the CombatAction and Attack code to make it easier to use for
  range.

* Add collision detection to the distance checks before attacking in the
  CombatAction.

* Create a Ruby DSL for defining projectile types and fix the
  ProjectileUpdateOperation so it uses the correct position offset.

* Fix the packet structure of the HintIconMessageEncoder.

data/plugins/combat/bonuses.rb

@@ -15,30 +15,30 @@ module Combat
 
     def other_bonuses(melee_strength: 0, ranged_strength: 0, prayer: 0)
       @other_bonuses = {
-        :melee_strength  => melee_strength,
-        :ranged_strength => ranged_strength,
-        :prayer          => prayer
+        melee_strength: melee_strength,
+        ranged_strength: ranged_strength,
+        prayer: prayer
       }
     end
 
     def defence_bonuses(stab: 0, slash: 0, crush: 0, magic: 0, range: 0)
       @defence_bonuses = {
-        :stab  => stab,
-        :slash => slash,
-        :crush => crush,
-        :magic => magic,
-        :range => range
+        stab: stab,
+        slash: slash,
+        crush: crush,
+        magic: magic,
+        range: range
       }
     end
 
     def attack_bonuses(stab: 0, slash: 0, crush: 0, magic: 0, range: 0)
       @attack_bonuses = {
-        :stab  => stab,
-        :slash => slash,
-        :crush => crush,
-        :magic => magic,
-        :range => range
+        stab: stab,
+        slash: slash,
+        crush: crush,
+        magic: magic,
+        range: range
       }
     end
   end
-end
+end