refactor(dashboard): 口径说明抽为metric_explain组件减少重复

resources/views/admin/components/metric_explain.blade.php

@@ -0,0 +1,13 @@
+@php
+    $items = $items ?? [];
+    $title = $title ?? '口径说明';
+@endphp
+
+@if(is_array($items) && count($items) > 0)
+    <div class="muted muted-xs">
+        <strong>{{ $title }}：</strong>
+        @foreach($items as $i => $text)
+            <span>{{ $text }}@if($i < count($items) - 1)；@endif</span>
+        @endforeach
+    </div>
+@endif