Add a trash bin for request collections and documents

[elliot40404]

With insomnia's every changing UI and frequent updates many bugs are introduced and the latest one I found were click issues. When a context menu is opened with left click or with arrow drop down any item that is close enough to the cursor is automatically clicked this led to deletion of 2 requests folders and 2 collections. So please add a trash bin so if anything is deleted by mistake they can be recovered