In the first of a new feature called Insert Coin, we discuss video games and people who make them possible. To kick things off, we attended the inaugural iDig International Games Music Festival at the convention centre in Dublin for plenty of gaming and a concert by Video Games Live. Photos by Isabel Thomas. It’s old hat now that video games are big business. We all know that they compete with films, music, theater, TV and pornography as the preeminent form of entertainment for the 21st century. There’s no sense arguing anymore whether video games are just for children now…