Selectively Limiting Pokemon by Dex ID

[Qvdpost]

This pull request solves the [Contribution Idea] Issue #issue-2012485912

It includes many changes and a Pokemon Icon library. Not sure how that works with the License and such. But I'm keen learn.

Icon's were sourced from: https://github.com/PokeAPI/sprites

There is a dev-release over at the fork available for download.