feat: A GTS-like way of trading mons

[rrrtred]

First off, great application. I think it’s a good solution for those who want to store their pokemon without relying and paying Nintendo for the privilege.

This is just a shower thought request that came across me, so forgive me if this is a bit out of scope for the application.

I would like to request for cross-application trading feature in OpenHome.

I think that the OpenHome tracking number and its extra metadata also makes it great for trading with other users.

Sure, we can just hack a pokemon in, but what’s the fun in that? Plus, I think it’s neat to be able to have a record of every trainer that a pokemon went through. Gives it a little bit of history, no?

Describe the solution you'd like
A GTS-like way of trading pokemon. I imagine the user flow to be something like this:

1. The user creates a trade request with a pokemon in their OpenHome box.
2. The user specifies the pokemon that they want: (a) species, (b) level, (c) gender, (d) region origin, (e) shininess
3. The trade request gets uploaded to the GTS, including the pokemon, for a set amount of days.
4. The request gets posted to an in-app bulletin board that looks similar to https://pkmnclassic.net/gts/
5. Another user clicks on the bulletin board post and that starts a trade.
6. The other user uploads a pokemon that matches the criteria.
7. The current trainer data is appended as additional metadata (this is aside from the OT data) to each pokemon and is, then, traded.
8. The original user can check the status of the trade and download the traded pokemon from the GTS.