"Free pattern" match progress

The new databases are ready (and will be generated by the next auto-update of MoyoGo). New data is needed to be able to match any pattern very quickly to the games.

The pattern-definition selection code is 90% ready (you draw transparent green areas to indicate what pattern you want to search, similar to how it works in Kombilo).

The pattern-definition-to-preprocessed data algorithm is 90% ready and still has to be implemented.

The search algorithm to be used is ready, but still has to be implemented.