Add Serbian localization

src-ui/angular.json

@@ -31,6 +31,7 @@
 					"ro-RO": "src/locale/messages.ro_RO.xlf",
 					"ru-RU": "src/locale/messages.ru_RU.xlf",
 					"sl-SI": "src/locale/messages.sl_SI.xlf",
+					"sr-CS": "src/locale/messages.sr_CS.xlf",
 					"sv-SE": "src/locale/messages.sv_SE.xlf",
 					"zh-CN": "src/locale/messages.zh_CN.xlf"
         }

src-ui/src/app/app.module.ts

@@ -82,6 +82,7 @@ import localePt from '@angular/common/locales/pt'
 import localeRo from '@angular/common/locales/ro'
 import localeRu from '@angular/common/locales/ru'
 import localeSl from '@angular/common/locales/sl'
+import localeSr from '@angular/common/locales/sr'
 import localeSv from '@angular/common/locales/sv'
 import localeZh from '@angular/common/locales/zh'
 
@@ -100,6 +101,7 @@ registerLocaleData(localePt, 'pt-PT')
 registerLocaleData(localeRo)
 registerLocaleData(localeRu)
 registerLocaleData(localeSl)
+registerLocaleData(localeSr)
 registerLocaleData(localeSv)
 registerLocaleData(localeZh)
 

src-ui/src/app/services/settings.service.ts

@@ -258,6 +258,12 @@ export class SettingsService {
         englishName: 'Slovenian',
         dateInputFormat: 'dd.mm.yyyy',
       },
+      {
+        code: 'sr-cs',
+        name: $localize`Serbian`,
+        englishName: 'Serbian',
+        dateInputFormat: 'dd.mm.yyyy',
+      },
       {
         code: 'sv-se',
         name: $localize`Swedish`,

src/paperless/settings.py

@@ -314,6 +314,7 @@ LANGUAGES = [
     ("ro-ro", _("Romanian")),
     ("ru-ru", _("Russian")),
     ("sl-si", _("Slovenian")),
+    ("sr-cs", _("Serbian")),
     ("sv-se", _("Swedish")),
     ("zh-cn", _("Chinese Simplified")),
 ]