New market item: Buy, Sell, or Trade your Boosters (White Giant)

It has been seen many times, both here and with allies and other traders, that many "boosters" are sitting idle, not used, or in fact, cannot be used for some reason. In these situations, then, it would be convenient to open some way to either buy ones from others, sell surplus ones not used, or have some way to exchange "boosters" with others. The suggestion would be to add "boosters" as another item on either the "Direct Trading" or "Cash Market".

Currently, "boosters" are only kept with one entity-at-a-time, and are not transferable, nor redeemable for value. In the case of an entity being sold or canceled, or lost in war, these boosters, too, are currently lost. There is also no measure in the country assets or even some line item showing how many "boosters" an entity has in reserve, and which ones those are. Only after taking control of a country, is it possible to go to the "Boosters