Add support for configuring DbModelOptions via DI

Introduce ConfigureDbModel methods to DependencyInjection for setting up DbModelOptions from code or configuration. Update required services tracking and add usage in Program.cs to enable structured DbModelOptions injection.

src/ReC.API/Program.cs

@@ -38,6 +38,7 @@ try
         options.LuckyPennySoftwareLicenseKey = builder.Configuration["LuckyPennySoftwareLicenseKey"];
         options.ConfigureRecActions(config.GetSection("RecAction"));
         options.ConfigureSqlException(config.GetSection("SqlException"));
+        options.ConfigureDbModel(config.GetSection("DbModel"));
     });
 
     builder.Services.AddRecInfrastructure(options =>