Strategies

It is now possible to configure basic passing strategy to use in a match: passing frequency (rare, normal, often) and passing style (short, medium, long). These strategies are associated with a specific formation, so by setting up a formation for a match already sets the strategy for that match.

The way these settings affect the match still needs to be improved, of course, but we'll wait until we have enough configurable strategies so we can improve them as a whole. We already can see different behaviours during the match with only these two, though.