feat(Repository): Add and implement ReadOrDefaultAsync method.

- add read method can map for each

DigitalData.Core.Infrastructure/DbRepository.cs

@@ -33,11 +33,25 @@ public class DbRepository<TDbContext, TEntity> : IRepository<TEntity> where TDbC
         return entities;
     }
 
-    public virtual async Task<IEnumerable<TEntity>> ReadAsync(Expression<Func<TEntity, bool>>? expression = null, CancellationToken ct = default)
+    public virtual async Task<IEnumerable<TEntity>> ReadAllAsync(Expression<Func<TEntity, bool>>? expression = null, CancellationToken ct = default)
         => expression is null
             ? await Entities.AsNoTracking().ToListAsync(ct)
             : await Entities.AsNoTracking().Where(expression).ToListAsync(ct);
 
+    public virtual async Task<TEntity?> ReadOrDefaultAsync(Expression<Func<TEntity, bool>> expression, bool single = true, CancellationToken ct = default)
+        => single 
+            ? await Entities.AsNoTracking().Where(expression).SingleOrDefaultAsync(ct)
+            : await Entities.AsNoTracking().Where(expression).FirstOrDefaultAsync(ct);
+
+    public virtual async Task<IEnumerable<TDto>> ReadAllAsync<TDto>(Expression<Func<TEntity, bool>>? expression = null, CancellationToken ct = default)
+        => Mapper.Map<TDto>(await ReadAllAsync(expression, ct));
+
+    public virtual async Task<TDto?> ReadOrDefaultAsync<TDto>(Expression<Func<TEntity, bool>> expression, bool single = true, CancellationToken ct = default)
+    {
+        var entity = await ReadOrDefaultAsync(expression, single, ct);
+        return entity is null ? default : Mapper.Map<TDto>(entity);
+    }
+
     public virtual async Task UpdateAsync<TDto>(TDto dto, Expression<Func<TEntity, bool>> expression, CancellationToken ct = default)
     {
         var entities = await Entities.Where(expression).ToListAsync(ct);