feat(规则词库): 添加新增词库按钮并优化删除和编辑按钮样式

在规则词库页面中，新增了一个用于添加词库的按钮，并优化了删除和编辑按钮的样式，使其包含图标以提高可读性和用户体验。

src/views/rules/words.vue

@@ -6,6 +6,15 @@
         <h2 class="text-lg font-semibold mb-4">质检词库</h2>
         <div class="grid grid-cols-8 gap-4">
           <div 
+           
+            class="flex flex-col items-center p-4 border rounded-lg hover:bg-gray-50 hover:border-blue-500 shadow-sm relative group h-full">
+            <span 
+              class="flex flex-col justify-center items-center flex-1 w-full cursor-pointer hover:text-blue-500">
+              <el-icon class="text-2xl"><Plus /></el-icon>
+            </span>
+          
+          </div>
+          <div 
             v-for="(item, index) in wordCategories" 
             :key="index" 
             class="flex flex-col items-center p-4 border rounded-lg hover:bg-gray-50 hover:border-blue-500 shadow-sm relative group"
@@ -22,16 +31,18 @@
                 type="danger" 
                 size="small"
                 @click="handleDelete(index)"
-                class="flex-1"
+                class="flex-1 flex items-center gap-1"
               >
+                <el-icon><Delete /></el-icon>
                 删除
               </el-link>
               <el-link 
                 type="warning" 
                 size="small"
                 @click="handleEdit(index)"
-                class="flex-1"
+                class="flex-1 flex items-center gap-1"
               >
+                <el-icon><Edit /></el-icon>
                 编辑
               </el-link>
             </div>