Generate the wscript for the rules

[Shaac]

Writing the wscript for a new game is always the same. Let’s generate it automatically (maybe with stechec2-generator rules).

For reference, in the docs:
https://stechec2.readthedocs.io/en/latest/rules.html#the-wscript
There is also often a section for the unit tests, but it is not in the docs!