Special encounters

This update brings so-called 'special encounters' to the game - pre-generated levels with permanent architecture and inhabitants. You could consider this a violation of the Berlin interpretation, but after all, even Angband and Moria had cities with shops!

However, my encounters are rather not like them, but like the random events from Slay the Spire: the player finds himself in a special place/situation where special personalities/objects await him. The player has a certain choice of what to do, and this choice will be remembered by the game and may affect something in the future.

The game will, if possible, toss the player into those encounters in which he has not yet participated, but if he has already seen them all, they will start to repeat themselves. There is only one simple encounter in the game so far, but, as always, the important thing is that the software foundation is ready.