Add ability to pause or stop uploading a specific site on Uploader app

[koonchaya]

Original post: https://rfcx.slack.com/archives/C03FD1WD02J/p1676534431610179

Description

Give the ability to delete Queued sites after they are created in companion app. I dragged 5 folders with a very high number of files and created 5 sites in the companion app. I would like to be able to remove sites that are in queue that I no longer want to upload or want to upload at a later time.