chore: update dependencies and improve dashboard settings

- Updated Qwik and Qwik City to version 1.15.0
- Updated Tailwind CSS and related plugins to latest versions
- Added a new Settings component to manage user settings
- Integrated settings management into the OSBar component
- Improved file display in the dashboard with better responsiveness
- Enhanced error handling for user info fetching
- Removed unused id from Testimonials component

src/components/landing/Testimonials.tsx

@@ -95,7 +95,6 @@ export default component$(() => {
                 <Testimonial 
                     pfp="https://git.iwakura.rip/avatars/38bbf57a26f2891c59102582240386a4e2fa52b3999374673e0f4c4249ed4149?size=512"
                     nickname="hexlocation"
-                    id="1325924978805440522"
                     quote="I've been using stereo for a while now, and I can't imagine going back to any other file host. It's just that good!"
                 />