feat: add album and miscellaneous controllers with album mapping

Mapping/AlbumMapping.cs

@@ -0,0 +1,27 @@
+using Shadow.DTOs;
+using Shadow.Entities;
+
+namespace Shadow.Mapping;
+
+public static class AlbumMapping
+{
+	public static AlbumViewShortDTO ToAlbumViewShort(Album album)
+	{
+		AlbumViewShortDTO dto = new AlbumViewShortDTO
+		{
+			id = $"{album.Id}",
+			name = album.Name,
+			artist = album.Artist?.Name ?? "[Unknown Artist]",
+			artistId = $"{album.ArtistId}",
+			coverArt = "default.png",
+			songCount = album.Songs.Count,
+			duration = album.Songs.Sum(s => s.Duration),
+			playCount = 0,
+			year = 0,
+			genre = "unknown",
+			// played = "never"
+		};
+
+		return dto;
+	}
+}