Add South Korean won to currency codes (#5914)

Greetings from Seoul! I found this amazing project a few days ago, and
trying to introduce it to my team. However there is a tiny but
significant problem, that South Korean won is not available in twenty.

So I added `KRW` to the enum `CurrencyCode` and the constant
`SETTINGS_FIELD_CURRENCY_CODES`. I tested it locally and apparently
works fine.

packages/twenty-front/src/modules/object-record/record-field/types/CurrencyCode.ts

@@ -14,4 +14,5 @@ export enum CurrencyCode {
   MAD = 'MAD',
   QAR = 'QAR',
   AED = 'AED',
+  KRW = 'KRW',
 }