Get/set direction of currently non-rotatable entity

[mickael9]

Some entities such as the assembling table have no direction unless we change their settings (eg set it to a fluid recipe).

When in that state, the direction property always returns 0 and assignments to it are ignored. But the entity actually has a direction, it's just not exposed.
If you set a fluid recipe, then rotate, then reset the recipe, the rotation is still kept (but always exposed as 0 in the mod API when the recipe is cleared).

It would make sense for the real direction to always be exposed and allow it to be changed in that case.