Document `inventory_settings` property

[jaw0r3k]

The pr documents inventory_settings property on guild object It doesnt have too much use cases so for now its left without any specific description

is_emoji_pack_collectible can be received by enabling:

Allow everyone to use and collect this server's emojis in emojis tab

[advaith1]

inventory/emoji packs got killed a few months ago :(

[JustinBeckwith]

Apologies - this field looks to be flagged as deprecated, and private :/ Closing this out for now.