add: Listagem de clientes

Data/SqliteClientRepository.cs

@@ -20,7 +20,28 @@ namespace Workshop8.Data
 
         public async Task<IEnumerable<Cliente>> GetAllClientsAsync()
         {
-            // TODO: implementar SELECT
+            // SELECT
+            var clientes = new List<Cliente>();
+
+            await using var conn = new SqliteConnection(_connectionString);
+            await conn.OpenAsync();
+
+            var cmd = conn.CreateCommand();
+            cmd.CommandText = "SELECT id, nome, email, CriadoEm FROM Clientes;";
+
+            await using var reader = await cmd.ExecuteReaderAsync();
+            while (await reader.ReadAsync())
+            {
+                var c = new Cliente
+                {
+                    Id = reader.GetInt32(0),
+                    Nome = reader.GetString(1),
+                    Email = reader.GetString(2),
+                    CriadoEm = reader.GetDateTime(3)
+                };
+                clientes.Add(c);
+            }
+            return clientes;
             return new List<Cliente>();
         }