Tidy up

- Ran goimports to format code and imports
- Removed unused module from go.mod
- Added .editorconfig to keep formatting standard across contributors

cmd/wwctl/main.go

@@ -4,9 +4,8 @@ import (
 	"github.com/hpcng/warewulf/internal/app/wwctl"
 )
 
-
 func main() {
 	root := wwctl.GetRootCommand()
 
 	root.Execute()
-}
+}