add item count syncing

[AcrylonitrileButadieneStyrene]

some of the newer games (Love You, FOG) only use items for some things and not permanent switches, which has caused issues with badges being made.

adds item syncing similar to how variables and switches are synced

this has not been tested outside of it compiling.

[Desdaemon]

This branch also manipulates data.item_counts if it's relevant to badge tags tracking

ynoengine/src/game_party.cpp

Lines 260 to 268 in b998167

	if (data.item_counts[idx] == 1) {
	// We just used up the last one
	data.item_ids.erase(data.item_ids.begin() + idx);
	data.item_counts.erase(data.item_counts.begin() + idx);
	data.item_usage.erase(data.item_usage.begin() + idx);
	} else {
	data.item_counts[idx]--;
	data.item_usage[idx] = 0;
	}