Add Simon Tatham's Portalble Puzzle Collection to homebrew-games. Depends on https://github.com/Homebrew/homebrew/pull/25828

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
Incorporating code review comments.

Closes #96.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
mednafen 0.9.32.1-WIP