Add "every quality" as an quality option in signals

[pjr]

TL;DR

I want to be able to use every quality in a signal. I can use them in filters (inserters, splitters, storage slots in {steel boxes, cargo wagons, etc}, etc) but I can't set them as names for trains, train stations, or send/receive them over circuit networks/radars. hopefully the screenshots make sense.

What?

This is what I currently do to say "this is a loading/unloading station for materials of a certain quality":

06-04-2025, 12-06-17.png (293.91 KiB) Viewed 218 times

you can see that I have stations for loading different quality holmium ore. however, at my scrap recycling plant I have mixed quality holmium ore from using quality modules and recycling mixed quality scrap. on fulgora islands are small, and I want to quickly train the mixed ore to a different island to sort/upcycle the ore. currently I use this naming convention:

06-04-2025, 12-10-34.png (247.36 KiB) Viewed 218 times

I know that these symbols already exist in the UI:

06-04-2025, 12-19-27.png (574.81 KiB) Viewed 218 times

let me use these anywhere that I could use circuits.

Why?

I use trains to deliver materials around my factories. I have set up circuit networks to control trains with dynamic schedules to go to pickup and dropoff stations when supply_of_item >= 1 and demand_of_item >= 1.

with abundant items like iron plates and copper plates I can easily do supply_of_normal_iron, supply_of_legendary_iron, etc and destroy/recycle the intermediate quality levels.

with bottlenecked items like ice or holmium I want to keep every quality level and use that signal in circuits/names