Add project files.

OfflineDemo/Models/ShortsModel.cs

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+namespace OfflineDemo.Models;
+
+public class ShortsModel
+{
+	public int Id { get; set; }
+	public string Title { get; set; }
+	public string Description { get; set; }
+	public string Hashtags { get; set; }
+	public string Mp4FileUrl { get; set; }
+	public string ImageFileUrl { get; set; }
+	public bool IsUploaded { get; set; } = false;
+}

OfflineDemo/Models/TodoModel.cs

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+namespace OfflineDemo.Models;
+
+public class TodoModel
+{
+    public DateTime CreationDate { get; set; } = DateTime.Now;
+    public string ToDoItem { get; set; }
+    public bool IsComplete { get; set; }
+}

OfflineDemo/Models/UploadModel.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace OfflineDemo.Models;
+
+public class UploadModel
+{
+	[Required]
+	[StringLength(100, ErrorMessage = "Title must be less than 100 characters.")]
+	public string Title { get; set; } = "";
+
+	[Required]
+	[StringLength(500, ErrorMessage = "Description must be less than 500 characters.")]
+	public string Description { get; set; } = "";
+
+	[StringLength(200, ErrorMessage = "Hashtags must be less than 200 characters.")]
+	public string Hashtags { get; set; } = "#";
+}