Update localization files + references (#4556)

* Initial plan

* Add localization support to NameChangeModal component

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Add NameChangeModal translations to English language file

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* fix(i18n): fix localization keys

* chore(test): add i18n test

* chore(i18n): update translation script

* chore(i18n): reorgnize translation keys and update components

* chore: fix linting warnings

* chore(i18n): update all the language files

* feat(i18n): add last live ago i18n key

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: gabek <414923+gabek@users.noreply.github.com>
Co-authored-by: Gabe Kangas <gabek@real-ity.com>

web/components/ui/Footer/Footer.tsx

@@ -22,13 +22,13 @@ export const Footer: FC = () => {
       </span>
       <span className={styles.links}>
         <a href="https://owncast.online/docs" target="_blank" rel="noreferrer">
-          {t('Documentation')}
+          {t(Localization.Frontend.Footer.documentation)}
         </a>
         <a href="https://owncast.online/help" target="_blank" rel="noreferrer">
-          {t('Contribute')}
+          {t(Localization.Frontend.Footer.contribute)}
         </a>
         <a href="https://github.com/owncast/owncast" target="_blank" rel="noreferrer">
-          {t('Source')}
+          {t(Localization.Frontend.Footer.source)}
         </a>
       </span>
     </footer>