/kit preview - add a way to see contents of the shulker box

Using "/kit preview <kit>", you can preview kit contents, but it isn't as helpful anymore. The issue is that the kit contents were put into a shulker box. This does make it easier to claim kits, but the downside is that there's NO way to preview the shulker box contents. You can preview them if the items are showcased in chat, but NOT from the kit preview GUI. The web store does show a screenshot of the kit contents, but you can't tell what enchants the gear has from this. I was told that you may be able to do this with a client mod, but even if so you shouldn't need a client mod to do this. Most players won't go through that effort. I think it would be good if there was a "formal" method to preview the kit contents, specifically what's inside of the shulker box. You can ask other players (so I suppose this isn't a huge deal, given that RPG has an active playerbase), but ideally this isn't information you should have to ask other players for, it should be readily available. I see a few options. 1. Change the kit preview command to show the kit contents (as it was before the shulker box change was made) 2. Allow you to click on the shulker box in the kit preview GUI to preview it. Also ideally add text saying "Click to preview" or similar so players know.