LOS ANGELES—Michael Nesmith, the singer-songwriter, author, actor-director and entrepreneur who will likely be best remembered as the wool-hatted, guitar-strumming member of the made-for-television rock band The Monkees, has died at 78. Nesmith, who had undergone quadruple bypass surgery in 2018, died at home Friday of natural causes, his family said in a statement. Nesmith was…