Added MangaDex Api. Updated project structure.

MangaReader.Core/Metadata/SourceMangaChapter.cs

@@ -0,0 +1,11 @@
+namespace MangaReader.Core.Metadata;
+
+public class SourceMangaChapter
+{
+    public int? Volume { get; set; }
+    public required float Number { get; set; }
+    public string? Name { get; set; }
+    public required string Url { get; set; }
+    public long? Views { get; set; }
+    public DateTime? UploadDate { get; set; }
+}