Create "local" dir on startup

src/main/scala/Main.scala

@@ -17,6 +17,8 @@ object Main extends App {
     "Milwaukee Bucks"
   )
 
+  os.makeDir.all(localDir)
+
   val teamFilter = (team: Team) => selectedTeams.contains(team.full_name)
 
   val teams = Extract.getTeams(localFiles("teams"), teamFilter)