feat: 优化页面布局和交互体验

- 使用sticky定位替代fixed定位，提升滚动体验
- 添加视频播放图标和图片展示功能
- 实现搜索框热门关键词轮播效果
- 优化编辑器链接插入功能
- 调整组件样式和布局细节

search.html

@@ -41,7 +41,7 @@
             </div>
 
             <div class="matter flexflex">
-                <div class="matter-content flex1">
+                <div class="matter-content flex1" :style="{'top': matterHeight + 'px'}">
                     <div class="list-box" v-if="list.length != 0">
                         <template v-for="(item,index) in list" :key="index">
                             <item-offer v-if=" item.type == 'offer'" :itemdata="item"></item-offer>
@@ -68,7 +68,7 @@
                         <img @click="nextPage" v-else v-else class="arrows" src="./img/arrows-gray-deep.svg" alt="" />
                     </div>
                 </div>
-                <div class="sidebar-box">
+                <div class="sidebar-box" :style="{'top': sidebarHeight + 'px'}">
                     <hot-search></hot-search>
                     <hot-tag></hot-tag>
                     <slideshow-box></slideshow-box>