TITANIC: Add autosave for parrot-chicken encounter

[dafioram]

I believe it will be very frustrating for new players that don't save before the chicken encounter, and have to repeat the whole chicken preparation part again if they lose to the parrot.

I think this is one of two places in the entire game where an autosave would be much appreciated. It would go in slot0.

I believe the steps to do this enhancement would be:

1. Prevent the user from saving to slot0 (both in game and gmm), i.e., reserve it for autosave. So the in-game saving/loading (0-4) would now save/load to 1-5.

2. Have the game autosave when entering the parrot room. Ideally, the autosave logic would be made more complex so that it only saves under the exact/best conditions when the user is doing the parrot chicken game (user has sent the hot chicken mustard/pureed, and its in the succ queue), but I think just having the game autosave everytime the player enters the parrot room is sufficient.

If this seems worth while and not too low of a priority then I can do step 1, but I wouldn't be able to do step 2 (the logic for the autosave).

[dafioram]

I think this is too low of a priority. If someone wants to do this then they can reopen.