[AI] SuperSimpleAI v55 (Stable) and v58 (Testing)

[Jaume]

Released v57 because v56 crashes.

v57:
Fixed crash when transforming dual cargo route to single cargo route.
Fixed some unremoved tiles when passing lane building fails.
Protect with depots the headers of passing lanes while building.

[Jaume]

Hi! v58 is out!

This version fixes some bugs, some other bugs remain alive XD

v58:
Protect with depots the headers of stations while building.
Fixed missing depots if fake passing lanes where building. These depots prevent 90 grade turns.
Puts a rail under bridges if depot can't be build. These depots prevent 90 grade turns.
Fixed adding new vehicles after a route was closed.
Fixed unremoved temporaly depots when removing rail lines (bug since v57).
Use always the cheapest rail depot type when it's a temporaly depot used to prevent 90 grade turns or to be blocked by other company's buildings.