feat(web): add an option to change the date formats (#7174)

* feat: add an option to change the date formats

* pr feedback

* fix: change title

* fix: show list supported by the browser

* fix: tests

* fix: dates

* fix: check only if locale is set

* fix: better fallback value

* fix: fallback

* fix: fallback

* feat: add default locale option

* refactor: shared components

* refactor: shared components

* prepare for svelte 5

* don't use relative paths

* refactor: fallback value

Co-authored-by: Michel Heusschen <59014050+michelheusschen@users.noreply.github.com>

* fix: parsing store

* fix: lint

* refactor: locales

---------

Co-authored-by: Michel Heusschen <59014050+michelheusschen@users.noreply.github.com>
Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

web/src/lib/components/user-settings-page/device-card.svelte

@@ -57,7 +57,7 @@
       </span>
       <div class="text-sm">
         <span class="">Last seen</span>
-        <span>{DateTime.fromISO(device.updatedAt).toRelativeCalendar(options)}</span>
+        <span>{DateTime.fromISO(device.updatedAt, { locale: $locale }).toRelativeCalendar(options)}</span>
       </div>
     </div>
     {#if !device.current}