Implemented relations displaying mode

src/infrastructure/road.zig

@@ -1,6 +1,7 @@
 const rl = @import("raylib");
 
 const c = @import("../common/constants.zig");
+const st = @import("../common/structures.zig");
 const Node = @import("node.zig").Node;
 
 pub const Road = struct {