Changed the number of pacman's lives.
Fixed clear_or_revert_symbol().
Target hit display.
Changed ghost initialization.
Clearing ghost positions is moved to the function.
Added flag in struct ghost_type (reached_pacman).
Changed catching stage.
Now eating an energizer resets the counter.

Fixed coordinate in field_has_coin.
Added marks on the field for the liberation zone (1 in front of #).
Prison parameters for the ghost are set.
Fixed condition in BFS search (additionally exclude the current point in the
loop, dx == 0 && dy == 0).

Reverse direction
Random direction

Fixed remaining direction check for pacman (old version was commented out).
Breadth First Search for red ghost.
Changed switch style.