[Fix] Address PR review feedback for starting gold feature

- Disabled denominations now receive 0 at character creation
- Replace CharacterGoldField subclass with GoldField options callback;
  initial value logic now lives in character.mjs
- Use formInput instead of plain text inputs for denomination labels
- Rename "Quantity Name" column header to "Denomination"
- Remove initialCurrency from resourceConfig and currency sync from
  refreshConfig (no longer needed)

module/config/resourceConfig.mjs

@@ -65,7 +65,6 @@ const companionBaseResources = Object.freeze({
 
 export const character = {
     base: characterBaseResources,
-    initialCurrency: { coins: 0, handfuls: 1, bags: 0, chests: 0 },
     custom: {}, // module stuff goes here
     all: { ...characterBaseResources }
 };