feat: 添加内容热重载指令 (#4)

Reviewed-on: #4

YaeBlog.Core/Models/BlogContent.cs

@@ -4,5 +4,7 @@ public class BlogContent
 {
     public required string FileName { get; init; }
 
+    public required MarkdownMetadata Metadata { get; init; }
+
     public required string FileContent { get; set; }
 }

YaeBlog.Core/Models/BlogContents.cs

@@ -0,0 +1,10 @@
+using System.Collections.Concurrent;
+
+namespace YaeBlog.Core.Models;
+
+public sealed class BlogContents(ConcurrentBag<BlogContent> drafts, ConcurrentBag<BlogContent> posts)
+{
+    public ConcurrentBag<BlogContent> Drafts { get; } = drafts;
+
+    public ConcurrentBag<BlogContent> Posts { get; } = posts;
+}