Imply no_parking_sign -> road_sign

BUR #44385 has been approved by @evazion.

create implication no_parking_sign -> road_sign

No parking signs are road signs so we should imply it as such.

btw I think there are a bunch more road signs that could use an implication but I am lazy -- if anyone else wants to grab em go for it

BUR #44386 has been approved by @evazion.

create implication speed_limit_sign -> road_sign
create implication one_way_sign -> road_sign
create implication no_stopping_sign -> road_sign
create implication no_u-turn_sign -> road_sign
create implication road_closed_to_vehicles_sign -> road_sign

More road signs!

Road closed to vehicles sign seems to be the same thing as no entry sign, which seems to have the same purpose as the one way sign.

The bulk update request #44385 (forum #372018) has been approved by @evazion.

The bulk update request #44386 (forum #372023) has been approved by @evazion.