XL armor additions

Pursuant to discussion with KA101 in
https://github.com/CleverRaven/Cataclysm-DDA/pull/9669#comments, have
added XL versions of leather and boiled leather armour, fur armour, fur
coat, scrap suit, survivor winter armour and hood, and survivor fire
armour and hood, and AEP suit.

Have also added a new XL harness item.

Will have a go at doing the recipes tomorrow probably.
We also talked about more hand-wraps and XL helmets. Will probably do those tomorrow as well.

Used a script to export the items from a spreadsheet into JSON, and as far as I could tell, the only troulbe was I had to manually add in a few underscores, inverted commas and square brackets, but um, probably someone should check I've not done something completely stupid already.


I tried to follow the conventions established by the already existing XL items (i.e. same coverage but 1 extra encumbrance for XL survivor items), but on most of the sub-survivor tier armours I dropped about 5 points of coverage 'cause I thought it seemed appropriate.

Also added the OVERSIZE tag to helmet netting because...come on...it's a netting!

Oops, no omitting values.  The harness needs  "environmental_protection" : 0, .  I've seen this happen with a few other PRs recently so thought I'd mention the fact.

(This is why we ask folks to actually play the game with their changes.  If your JSON is borked, DDA will complain at you.  Usually before you get into the game.)