Make Inventory expansion upgrades available through the Joker store

[Optimus_Crime]

This may or may not have been suggested before i'm not sure, but i'm thinking perhaps 1-2k jt depending on the category it's up to LO what the prices will be ofc am just suggesting it would be nice to have these available from the joker store or armas idm either way. Since i've got quite a few player created songs and having max capacity of 20 just doesn't cut it for me.