feat: add database connections, initial migration and early CLI tooling

Entities/AlbumInteraction.cs

@@ -0,0 +1,12 @@
+namespace Shadow.Entities;
+public class AlbumInteraction
+{
+	required public int Id { get; set; }
+	required public int AlbumId { get; set; }
+	required public int UserId { get; set; }
+	public DateTime? PlayDate { get; set; } = null;
+	public bool Starred { get; set; } = false;
+
+	required public Album Album { get; set; }
+	required public User User { get; set; }
+}