feat: add text to blog post if author is set

Fixes #341

src/components/blog/SinglePost.astro

@@ -40,6 +40,16 @@ const { Content } = post;
           {post.readingTime && <> · {post.readingTime} min read</>}
         </p>
       </div>
+      {
+        post.author && (
+          <div class="flex justify-between flex-col sm:flex-row max-w-3xl mx-auto mt-0 mb-2 px-4 sm:px-6 sm:items-center">
+            <p>
+              <Icon name="tabler:user" class="w-4 h-4 inline-block -mt-0.5 dark:text-gray-400" />
+              {post.author}
+            </p>
+          </div>
+        )
+      }
       <h1
         class="px-4 sm:px-6 max-w-3xl mx-auto text-4xl md:text-5xl font-bold leading-tighter tracking-tighter font-heading"
       >
@@ -74,13 +84,7 @@ const { Content } = post;
     <div
       class="mx-auto px-6 sm:px-6 max-w-3xl prose prose-lg lg:prose-xl dark:prose-invert dark:prose-headings:text-slate-300 prose-md prose-headings:font-heading prose-headings:leading-tighter prose-headings:tracking-tighter prose-headings:font-bold prose-a:text-primary dark:prose-a:text-blue-400 prose-img:rounded-md prose-img:shadow-lg mt-8 prose-headings:scroll-mt-[80px]"
     >
-      {
-        Content ? (
-          <Content />
-        ) : (
-          <Fragment set:html={post.content || ""} />
-        )
-      }
+      {Content ? <Content /> : <Fragment set:html={post.content || ''} />}
     </div>
     <div class="mx-auto px-6 sm:px-6 max-w-3xl mt-8 flex justify-between flex-col sm:flex-row">
       <PostTags tags={post.tags} class="mr-5 rtl:mr-0 rtl:ml-5" />