feat: add country selection translations and update country name retrieval

apps/backoffice/src/app/i18n/locales/am.ts

@@ -262,6 +262,11 @@ export const am: Translations = {
     },
   },
 
+  country: {
+    select: 'አገር ይምረጡ',
+    notFound: 'ምንም አገር አልተገኘም',
+  },
+
   location: {
     title: 'አካባቢዎች',
     hierarchy: 'የአካባቢ ተዋረድ',

apps/backoffice/src/app/i18n/locales/en.ts

@@ -260,6 +260,11 @@ export const en = {
     },
   },
 
+  country: {
+    select: 'Select a country',
+    notFound: 'No countries found',
+  },
+
   location: {
     title: 'Locations',
     hierarchy: 'Location Hierarchy',