Lille Allen/Eater Margaret Eby’s new cookbook is as much about granting permission as it is showing you how to assemble a meal Most days, my partner and I have something we call egg lunch. At its most basic, it is an egg and rice. Sometimes there’s soy sauce and American cheese, or chile crisp, or the last of a wilting scallion and some other condiment, but sometimes it’s just egg and rice. Because did you know meals come three times a day? That you can’t just eat one big meal and be sustained for the rest of the week like…