Accept item type component views

Implemented API for Adding Package components, deletion of single and multiple packages etc feature

Stories covered -
[good_city/#7353] APP: Accept items
[good_city/#7347] API Doc: packages controller
[good_city/#7346] API Doc: item_types controller
Align the elements of a hash literal if they span more than one line.<br>Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping.