Initial efcore migration and updates to make sure upserting novels (mostly) works. still need to do chapter handling

DBConnection/Repositories/AuthorRepository.cs

@@ -0,0 +1,17 @@
+using DBConnection.Models;
+using DBConnection.Repositories.Interfaces;
+using Microsoft.EntityFrameworkCore;
+
+namespace DBConnection.Repositories;
+
+public class AuthorRepository : BaseRepository<Author>, IAuthorRepository
+{
+    public AuthorRepository(AppDbContext dbContext) : base(dbContext)
+    {
+    }
+
+    protected override IQueryable<Author> GetAllIncludedQueryable()
+    {
+        return DbContext.Authors.Include(i => i.Novels);
+    }
+}