Add repository registration to DependencyInjection

Added a `RegsRepository` queue to manage repository registrations.
Introduced `RegisterDefaultRepository<TDbContext, TEntity>()` to
enqueue scoped repository registrations. Updated `RegisterAllServices`
to process the `RegsRepository` queue during service registration.

DigitalData.Core.Infrastructure/DependencyInjection.cs

@@ -40,6 +40,9 @@ public static class DependencyInjection
         // 3. register db set factories (can overwrite)
         private readonly Queue<Action<IServiceCollection>> RegsDbSetFactory = new Queue<Action<IServiceCollection>>();
 
+        // 4. register repository
+        private readonly Queue<Action<IServiceCollection>> RegsRepository = new Queue<Action<IServiceCollection>>();
+        
         internal void RegisterAllServices(IServiceCollection services)
         {
             // 1. register from assembly
@@ -113,6 +116,11 @@ public static class DependencyInjection
             where TDbContext : DbContext
             where TEntity : class
             => RegsDbSetFactory.Enqueue(s => s.AddDbSetFactory(dbSetFactory));
+    
+        public void RegisterDefaultRepository<TDbContext, TEntity>()
+            where TDbContext : DbContext
+            where TEntity : class
+            => RegsRepository.Enqueue(s => s.AddScoped<IRepository<TEntity>, DbRepository<TDbContext, TEntity>>());
     }
 
     private static void InvokeAll<T>(this Queue<Action<T>> queue, T services)