bots personalities

[kotc]

bots could have their personalities defined as a sets of strategies they could use with priorities (even at the risk of not using particular strategy at all), ie.

• prefer building (roads/settlements) or buying cards
• when placing robber: -- prefer player with most vp -- prefer player with most roads/settlements -- prefer player closest to the bot -- prefer tile with most buildings around -- pacifist (put robber somewhere away from anyone)
• random strategy: have bot strategies rerolled on each game start it could also be a starting point for bots difficulty setting (ie. issue #98)

[kotc]

if having multiple priorities of a prticular type, just make a weighted table and randomly pick up result from it