Add Greek Language ('el') Support and Internationalization (#6677)

* Add Greek language support to the application

* Add support for Greek language in date handling and tests

* Update Greek locale file with translator and team information

* Add support for Greek language in date handling and tests

* Add support for Greek language in app configuration, and updated translation from the reviewers' comments

* Update src/locale/i18n.ts

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

* Update src/locale/i18n.ts

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

---------

Co-authored-by: Paul Frazee <pfrazee@gmail.com>
Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

src/locale/languages.ts

@@ -10,6 +10,7 @@ export enum AppLanguage {
   ast = 'ast',
   ca = 'ca',
   de = 'de',
+  el = 'el',
   en_GB = 'en-GB',
   es = 'es',
   fi = 'fi',
@@ -49,6 +50,7 @@ export const APP_LANGUAGES: AppLanguageConfig[] = [
   {code2: AppLanguage.ast, name: 'Asturianu – Asturian'},
   {code2: AppLanguage.ca, name: 'Català – Catalan'},
   {code2: AppLanguage.de, name: 'Deutsch – German'},
+  {code2: AppLanguage.el, name: 'Ελληνικά – Greek'},
   {code2: AppLanguage.en_GB, name: 'English (UK)'},
   {code2: AppLanguage.es, name: 'Español – Spanish'},
   {code2: AppLanguage.fi, name: 'Suomi – Finnish'},