Recently Added Chapters/Volumes (#1007)

* Working on adding recently added chapter/volumes to dashboard. Have some progress, need to tweak grouping logic.

* Tweaked the logic to work well for grouping. Now to incorporate information for UI to provide seamless integration

* Implemented UI part for Recently Added.

API/DTOs/RecentlyAddedItemDto.cs

@@ -0,0 +1,34 @@
+using System;
+using API.Entities.Enums;
+
+namespace API.DTOs;
+
+/// <summary>
+/// A mesh of data for Recently added volume/chapters
+/// </summary>
+public class RecentlyAddedItemDto
+{
+    public string SeriesName { get; set; }
+    public int SeriesId { get; set; }
+    public int LibraryId { get; set; }
+    public LibraryType LibraryType { get; set; }
+    /// <summary>
+    /// This will automatically map to Volume X, Chapter Y, etc.
+    /// </summary>
+    public string Title { get; set; }
+    public DateTime Created { get; set; }
+    /// <summary>
+    /// Chapter Id if this is a chapter. Not guaranteed to be set.
+    /// </summary>
+    public int ChapterId { get; set; } = 0;
+    /// <summary>
+    /// Volume Id if this is a chapter. Not guaranteed to be set.
+    /// </summary>
+    public int VolumeId { get; set; } = 0;
+    /// <summary>
+    /// This is used only on the UI. It is just index of being added.
+    /// </summary>
+    public int Id { get; set; }
+    public MangaFormat Format { get; set; }
+
+}