group function to group form layout by form meta data for layout
grouping will use an object like below when parsing its items:
grouping = [
{
"groups": [
{
"group_title": "title1",
"items": ["item1", "item2", "item3", "item4"],
}
],
"layout": "4",
"collapse": False
},
{
"groups": [
{
"group_title": "title2",
"items": ["item5", "item6"],
}
],
"layout": "2",
"collapse": False
}]