feat(currency): add GHS (Ghanaian Cedi)

The user requested GHC, but that is the pre-2007 code whose provider rate
is scaled x10000 against the modern cedi. GHS is the current ISO 4217 code,
which @fawazahmed0/currency-api covers at the real rate. Follows the RSD
pattern: config entry plus es/fr translations, no code changes needed.

config/currencies.php

@@ -158,5 +158,11 @@ return [
             'allows_primary' => true,
             'allows_account' => true,
         ],
+        [
+            'code' => 'GHS',
+            'name' => 'Ghanaian Cedi',
+            'allows_primary' => true,
+            'allows_account' => true,
+        ],
     ],
 ];

lang/es.json

@@ -1546,6 +1546,7 @@
     "System": "Sistema",
     "Serbian Dinar": "Dinar Serbio",
     "Nigerian Naira": "Naira Nigeriano",
+    "Ghanaian Cedi": "Cedi ghanés",
     "Take control of your finances with privacy-first money tracking. Let's set up your account in just a few minutes.": "Toma el control de tus finanzas con un seguimiento privado de tu dinero. Vamos a configurar tu cuenta en pocos minutos.",
     "Tap": "Toca",
     "Tap the": "Toca el botón",

lang/fr.json

@@ -1501,6 +1501,7 @@
     "Syncing transactions and balances…": "Synchronisation des transactions et des soldes…",
     "System": "Système",
     "Serbian Dinar": "Dinar Serbe",
+    "Ghanaian Cedi": "Cedi ghanéen",
     "Take control of your finances with privacy-first money tracking. Let's set up your account in just a few minutes.": "Prenez le contrôle de vos finances grâce au suivi de l'argent privé. Nous créerons votre compte dans quelques minutes.",
     "Tap": "Touche",
     "Tap the": "Touchez le bouton",