Add more Rulesets

[ociaw]

More Rulesets help to prove the robustness and flexibility of the design. We need to identify a variety of new rulesets to add, ideally both ones that are similar to A&A 1942 2E, and ones that are very different.
Axis & Allies Toolkit supports 1940 Global 2E and 1941 as well, so we can probably support those fairly easily as well.