ABP Vnext 仓储类配置 Read and Write

　　// Read Repository.
    public interface IUserReadRepository : IReadOnlyRepository<AppUser, Guid>
    {
    }

    // Assign DbContext.
    public class UserReadRepository : EfCoreRepository<ReadDbContext, AppUser, Guid>, IUserReadRepository
    {
        public UserReadRepository(IDbContextProvider<ReadDbContext> dbContextProvider) : base(dbContextProvider)
        {
            
        }
    }
    
    // Write Repository.
    public interface IUserWriteRepository : IRepository<AppUser, Guid>
    {
    }

    // Assign DbContext.
    public class UserWriteRepository : EfCoreRepository<WriteDbContext, AppUser, Guid>, IUserReadRepository
    {
        public UserWriteRepository(IDbContextProvider<WriteDbContext> dbContextProvider) : base(dbContextProvider)
        {
            
        }
    }