Easier Scala installation with Coursier

From that link: There’s no clear way to setup one’s machine for Scala development. Installing an Oracle JVM has become more and more blurry over the years, and each Scala CLI tool has its own installation process. Instructions to install JVMs and those Scala tools also vary depending on your operating system. To address that, the Scala Center decided to invest in the install command of coursier and to pack it with JVM installation capabilities.