Double-layered cardboard box

[anoobindisguise]

Summary

Content "Upgrade to large cardboard box "

Purpose of change

Large Cardboard Box was a decent early game storage option but it was severely limited by its 50kg weight limit compared to its massive 300+L storage.

Describe the solution

Two rolls of duct tape and two large cardboard boxes = 2 layers thick cardboard box that can hold more weight.

Describe alternatives you've considered

Deleting my fork and recreating so that it stops showing the commits I pushed to master in my pull requests.

Testing

json only, appears to work fine

Additional context

[ccaviness]

Trying to view the recipe for the reinforced cardboard box triggers an error traceback:

 DEBUG    : invalid furniture id "f_cardboard_box_reinforced"

 FUNCTION : const T &generic_factory<furn_t>::obj(const string_id<T> &) const [T = furn_t]
 FILE     : src/generic_factory.h
 LINE     : 445
 VERSION  : 0.F-5987-g0d23870736

[ccaviness]

#55256 fixes this.