Add edit/viewability to the item rarity (closes #152)

module/config.mjs

@@ -34,8 +34,10 @@ export const skills = {
 
 export const defaultItemTier = `simple`;
 export const itemTiers = [
-	`simple`, `greater`,
-	`rare`, `legendary`
+	{ value: `simple`, label: `dotdungeon.rarity.simple` },
+	{ value: `greater`, label: `dotdungeon.rarity.greater` },
+	{ value: `rare`, label: `dotdungeon.rarity.rare` },
+	{ value: `legendary`, label: `dotdungeon.rarity.legendary` },
 ];
 
 export const syncMilestones = [

module/models/Item/CommonItemData.mjs

@@ -31,7 +31,7 @@ export class CommonItemData extends foundry.abstract.TypeDataModel {
 			tier: new fields.StringField({
 				initial: DOTDUNGEON.defaultItemTier,
 				nullable: false,
-				choices: DOTDUNGEON.itemTiers,
+				choices: DOTDUNGEON.itemTiers.map(tier => tier.value),
 			}),
 			/*
 			If this property is set to true, the item will be shown in the combat tab