I am not an electrician and do not profess to be an expert, but common sense tells me that if you can put a light in a pool, you can also put a light in a braai.
Glass is made of "sand" which does not burn. Either an open bulb or preferably a bulb behind a glass cover. The techies will attend to the legalities of how to install and make it safe. My home made effort in the brick chimney of my braai have been working fine for decades. Replaced the bulb once. Let's braai!