Provide sample for custom forms with supervised table

[maririos]

For custom form samples that use sample forms that have tables, demonstrate iterating through tables and printing data.
Probably only include cell location and text to not overwhelm the output.

Need to get training data for it.

[maririos]

An example could be:

                foreach (FormField field in form.Fields.Values)
                {
                    Console.WriteLine($"Field '{field.Name}': ");
                    if (field.Value.ValueType == FieldValueType.Dictionary)
                    {
                        var table = field.Value.AsDictionary();
                        //columns
                        foreach (var col in table.Values)
                        {
                            Console.WriteLine($"Column {col.Name}");
                            if (col.Value.ValueType == FieldValueType.Dictionary)
                            {
                                var row = col.Value.AsDictionary();
                                foreach (var rowValues in row)
                                {
                                    Console.WriteLine($"Row {rowValues.Key}");
                                    if (rowValues.Value != null)
                                    {
                                        var rowContent = rowValues.Value;
                                        if (rowContent.Value.ValueType == FieldValueType.String)
                                        {
                                            Console.WriteLine($"  '{rowContent.Value.AsString()}'");
                                        }
                                    }
                                    else
                                    {
                                        Console.WriteLine("  Empty cell");
                                    }
                                }
                            }
                        }
                    }
                }

It should be prettier, but this gives an idea