Add .sbtopts to gitignore
Add .sbtopts to gitignore

UKHomeOffice/drt-scalajs-spa-exploration,UKHomeOffice/drt-scalajs-spa-exploration,somanythings/drt-scalajs-spa-exploration,UKHomeOffice/drt-scalajs-spa-exploration,somanythings/drt-scalajs-spa-exploration,somanythings/drt-scalajs-spa-exploration,somanythings/drt-scalajs-spa-exploration