i18n/language support for cs, eu, sk

Signed-off-by: Raju Udava <86527202+dstala@users.noreply.github.com>

packages/nc-gui/lib/enums.ts

@@ -26,10 +26,12 @@ export enum ClientType {
 export enum Language {
   ar = 'العربية',
   bn_IN = 'বাংলা',
+  cs = 'Czech',
   da = 'Dansk',
   de = 'Deutsch',
   en = 'English',
   es = 'Español',
+  eu = 'Basque',
   fa = 'فارسی',
   fi = 'Suomalainen',
   fr = 'Français',

tests/playwright/tests/language.spec.ts

@@ -7,10 +7,12 @@ const langMenu = [
   'help-translate',
   'ar.json',
   'bn_IN.json',
+  'cs.json',
   'da.json',
   'de.json',
   'en.json',
   'es.json',
+  'eu.json',
   'fa.json',
   'fi.json',
   'fr.json',
@@ -29,6 +31,7 @@ const langMenu = [
   'pt_BR.json',
   'ru.json',
   'sl.json',
+  'sk.json',
   'sv.json',
   'th.json',
   'tr.json',