DCG pack for the ninja build system

Hello,

I have made a small swi prolog pack for generating ninja build files.
The goal of the project is to ease the use of ninja for general data processing.
Let me know if you have any remarks or improvement ideas for this pack.

This is the first time I have tried to publish an swi-prolog pack so if any of you have some advice or remarks on how to publish a pack, I’m all ears.