The lights are there, but just turned off in software, so this would require an over the air update and an extra fee from Tesla to turn on the feature.There are 3rd party but I just searched and they are for the premium trim only. Turns out they are either brighter or colored vs the stock lights.
Hopefully someone comes out with a DIY kit to add them. If the plug is accessible it shouldn't be a difficult project, unless the place where the light is installed is missing.
I would be willing to pay $100 to get them turned on, and it would be easy money for Tesla.