style: 抽离BaseButton，支持按钮修改主题色

src/views/hooks/useClipboard.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { ContentWrap } from '@/components/ContentWrap'
 import { useClipboard } from '@/hooks/web/useClipboard'
-import { ElButton, ElInput } from 'element-plus'
+import { ElInput } from 'element-plus'
 import { ref } from 'vue'
 
 const { copy, copied, text, isSupported } = useClipboard()
@@ -13,10 +13,10 @@ const source = ref('')
   <ContentWrap title="useClipboard">
     <ElInput v-model="source" placeholder="请输入要复制的内容" />
     <div v-if="isSupported">
-      <ElButton @click="copy(source)" type="primary" class="mt-20px">
+      <BaseButton @click="copy(source)" type="primary" class="mt-20px">
         <span v-if="!copied">复制</span>
         <span v-else>已复制</span>
-      </ElButton>
+      </BaseButton>
       <p>
         当前已复制: <code>{{ text || 'none' }}</code>
       </p>