Resolve "Stream logger-output to goSDN-tview via gRPC"

Closes #51 (closed)

cmd/gosdn-tview/app/app.go

 package app
 
-import "github.com/rivo/tview"
+import (
+	"github.com/rivo/tview"
+)
 
 type view interface {
 	GetContent() tview.Primitive
@@ -17,6 +19,7 @@ func NewApp() *App {
 	a := &App{
 		app: tview.NewApplication(),
 	}
+
 	return a
 }