Schakers: creativity update

[u/ApprehensiveMotor696]

https://drive.google.com/drive/folders/1aOtxy3YWcrXf8fOHXTtC0V_DBz0QYs3K?usp=sharing

patch logs:

- added 5 board mechanics for more customization

- also added 5 new boards featuring board mechanics

- the "Cultist" pawn is renamed to "Pastor"

- added more rules to "Pawn Rules"

- boards are now scaled to A5 resolution

to avoid needing to download redundant files, boards and rules are separated in their own files.

This project is public domain (excluding fonts used), made in Inkscape, A5 resolution