feat: add SqlRow.AddToDataTable() and SqlRow.ToDataRow() extensions

Allows converting individual SqlRow instances to DataRow during
QueryStreamAsync iteration for incremental DataGridView binding.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: vkuttyp

src/SqlDotnetty.Core/ISqlDatabase.cs

@@ -123,3 +123,65 @@ public static async Task<SqlValue> ScalarAsync(
 
     private static object SqlValueToClr(SqlValue v) => v.ToClrObject();
 }
+
+/// <summary>Extension helpers that convert <see cref="SqlRow"/> to ADO.NET <see cref="System.Data.DataRow"/>.</summary>
+public static class SqlRowExtensions
+{
+    /// <summary>
+    /// Converts this <see cref="SqlRow"/> to a <see cref="System.Data.DataRow"/> and adds it to
+    /// <paramref name="table"/>. Columns are added to the table automatically on the first call
+    /// if the table has no columns yet.
+    /// </summary>
+    /// <example>
+    /// <code>
+    /// var dt = new DataTable("Orders");
+    /// await foreach (var row in conn.QueryStreamAsync("SELECT * FROM Orders"))
+    /// {
+    ///     row.AddToDataTable(dt);
+    ///     // update UI incrementally here
+    /// }
+    /// dataGridView1.DataSource = dt;
+    /// </code>
+    /// </example>
+    public static System.Data.DataRow AddToDataTable(this SqlRow row, System.Data.DataTable table)
+    {
+        if (table.Columns.Count == 0)
+        {
+            foreach (var col in row.Columns)
+                table.Columns.Add(col.Name, typeof(object));
+        }
+
+        var dataRow = table.NewRow();
+        for (int i = 0; i < row.ColumnCount; i++)
+            dataRow[i] = row[i].ToClrObject();
+        table.Rows.Add(dataRow);
+        return dataRow;
+    }
+
+    /// <summary>
+    /// Converts this <see cref="SqlRow"/> to a standalone <see cref="System.Data.DataRow"/>
+    /// belonging to a new <see cref="System.Data.DataTable"/> (not yet added to any table).
+    /// Useful when you need the <c>DataRow</c> without a pre-existing <c>DataTable</c>.
+    /// </summary>
+    /// <example>
+    /// <code>
+    /// await foreach (var row in conn.QueryStreamAsync("SELECT * FROM Orders"))
+    /// {
+    ///     var dataRow = row.ToDataRow();
+    ///     // dataRow.Table holds the schema, dataRow[0] etc. hold CLR values
+    /// }
+    /// </code>
+    /// </example>
+    public static System.Data.DataRow ToDataRow(this SqlRow row)
+    {
+        var dt = new System.Data.DataTable();
+        foreach (var col in row.Columns)
+            dt.Columns.Add(col.Name, typeof(object));
+
+        var dataRow = dt.NewRow();
+        for (int i = 0; i < row.ColumnCount; i++)
+            dataRow[i] = row[i].ToClrObject();
+        dt.Rows.Add(dataRow);
+        return dataRow;
+    }
+}