style: fix codegen formatting and run gofmt after generation

pkg/data/item/itemtypes.go

@@ -2,7 +2,7 @@
 // source: cmd/txttocode/txt/itemtypes.txt
 package item
 
-	const (
+const (
 	TypeNone              = "none"
 	TypeShield            = "shie"
 	TypeArmor             = "tors"
@@ -104,7 +104,7 @@ package item
 	TypeSkull             = "gemz"
 	TypeSwordsandKnives   = "blde"
 	TypeSpearsandPolearms = "sppl"
-	)
+)
 
 var ItemTypes = map[string]Type{
 	TypeNone:              {ID: 0, Name: "None", Code: "none", Throwable: false, Beltable: false, BodyLocs: []LocationType{}},

pkg/data/mode/object_mode.go

@@ -11,7 +11,6 @@ const (
 	ObjectModeSpecial3  ObjectMode = 5
 	ObjectModeSpecial4  ObjectMode = 6
 	ObjectModeSpecial5  ObjectMode = 7
-
 )
 
 func (m ObjectMode) String() string {