Add Catalan language support (#12926)

Co-authored-by: Oliver <oliver.henry.walters@gmail.com>

src/backend/InvenTree/InvenTree/setting/locales.py

@@ -19,6 +19,7 @@ from django.utils.translation import gettext_lazy as _
 LOCALES = [
     ('ar', _('Arabic')),
     ('bg', _('Bulgarian')),
+    ('ca', _('Catalan')),
     ('cs', _('Czech')),
     ('da', _('Danish')),
     ('de', _('German')),

src/frontend/.linguirc

@@ -2,6 +2,7 @@
     "locales": [
         "ar",
         "bg",
+        "ca",
         "cs",
         "da",
         "de",

src/frontend/src/contexts/LanguageContext.tsx

@@ -21,6 +21,7 @@ export const getSupportedLanguages = (): Record<string, string> => {
   return {
     ar: 'العربية',
     bg: 'Български',
+    ca: 'Català',
     cs: 'Čeština',
     da: 'Dansk',
     de: 'Deutsch',

src/frontend/src/locales/ca/messages.d.ts

@@ -0,0 +1,4 @@
+import { Messages } from '@lingui/core';
+          declare const messages: Messages;
+          export { messages };
+