[Suggestion] Whitelist for OT Pokemon

[SnowBlitzz]

I don't know if you take suggestions here and if you don't feel free to delete/close this.

Just thought it would be a good idea to original-trainer-rewards-only: true to have a whitelist for certain Pokemon specs so it's not an all-or-nothing setup. Personally would whitelist shiny and legendary specs for example which are normally more difficult to obtain.