feat: add ScrollToTopBtn component and integrate it into multiple pages

- Added ScrollToTopBtn component for smooth scrolling to the top of the page.
- Registered ScrollToTopBtn in main.ts.
- Integrated ScrollToTopBtn into browse.vue, discover.vue, recommend.vue, resource.vue pages.
- Updated components.d.ts to include ScrollToTopBtn type definition.
- Refactored MediaCard.vue and SlideView.vue for improved hover effects and styling.
- Cleaned up unused styles and optimized existing styles for better performance and readability.

src/main.ts

@@ -27,6 +27,7 @@ import VueApexCharts from 'vue3-apexcharts'
 
 // 6. 注册自定义组件
 import DialogCloseBtn from '@/@core/components/DialogCloseBtn.vue'
+import ScrollToTopBtn from '@/@core/components/ScrollToTopBtn.vue'
 import MediaCard from './components/cards/MediaCard.vue'
 import PosterCard from './components/cards/PosterCard.vue'
 import BackdropCard from './components/cards/BackdropCard.vue'
@@ -82,6 +83,7 @@ initializeApp().then(() => {
     .component('VApexChart', VueApexCharts)
     .component('VCronVuetify', CronVuetify)
     .component('VDialogCloseBtn', DialogCloseBtn)
+    .component('VScrollToTopBtn', ScrollToTopBtn)
     .component('VMediaCard', MediaCard)
     .component('VPosterCard', PosterCard)
     .component('VBackdropCard', BackdropCard)