Move some item datatypes into dedicated module

src/Dodge/Default/Weapon.hs

@@ -86,13 +86,11 @@ defaultGun = Weapon
     , _itIdentity = Pistol
     , _itConsumption = defaultAmmo
     , _itUse = defaultrUse
-    , _wpSpread = 0.02
-    , _wpRange = 20
     , _itFloorPict = const $ noPic $ colorSH green (prismPoly 
         (map (addZ 3) $ rectNESW 3 3 (-3) (-3))
         (map (addZ 0) $ rectNESW 5 3 (-5) (-7))
         )
-    , _itZoom    = ItZoom 20 0.2 1
+--    , _itZoom    = ItZoom 20 0.2 1
     , _itEquipPict = pictureWeaponOnAim
     , _itScroll = \_ _ -> id
     , _itAttachment = NoItAttachment
@@ -101,8 +99,11 @@ defaultGun = Weapon
     , _itInvDisplay = basicWeaponDisplay
     , _itInvColor = white
     , _itTargeting = Nothing
-    , _itWorldTrigger = Nothing
-    , _wpNumBarrels = 1
+    , _itType = Weapon'
+        { _wpSpread = 0.02
+        , _wpRange = 20
+        , _wpNumBarrels = 1
+        }
     , _itDimension = defaultItemDimension
     }
 defaultItemDimension :: ItemDimension