feat: add post update date (#243)

* feat: Add article update date

* feat:
1.Hide update time on the homepage;
2.Replace update icon;

* remove iconify-json/mdi

---------

Co-authored-by: liangjianhao <jianhao.liang@sz-sanjiang.com>

src/components/PostMeta.astro

@@ -8,11 +8,13 @@ import { url } from '../utils/url-utils'
 interface Props {
   class: string
   published: Date
+  updated?: Date
   tags: string[]
   category: string
   hideTagsForMobile?: boolean
+  hideUpdateDate?: boolean
 }
-const { published, tags, category, hideTagsForMobile = false } = Astro.props
+const { published, updated, tags, category, hideTagsForMobile = false, hideUpdateDate = false } = Astro.props
 const className = Astro.props.class
 ---
 
@@ -26,6 +28,17 @@ const className = Astro.props.class
         <span class="text-50 text-sm font-medium">{formatDateToYYYYMMDD(published)}</span>
     </div>
 
+    <!-- update date -->
+    {!hideUpdateDate && updated && updated.getTime() !== published.getTime() && (
+        <div class="flex items-center">
+            <div class="meta-icon"
+            >
+                <Icon name="material-symbols:edit-calendar-outline-rounded" class="text-xl"></Icon>
+            </div>
+            <span class="text-50 text-sm font-medium">{formatDateToYYYYMMDD(updated)}</span>
+        </div>
+    )}
+
     <!-- categories -->
     <div class="flex items-center">
         <div class="meta-icon"