Move packages to root folder

Signed-off-by: Jan Tytgat <jan.tytgat@corelayer.eu>

application/application.go

@@ -0,0 +1,38 @@
+package application
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+type Application interface {
+	Start(ctx context.Context) error
+	Shutdown() error
+}
+
+func New(c Config) (Application, error) {
+	var cmd *cobra.Command
+	var err error
+	if cmd, err = c.getRootCommand(); err != nil {
+		return nil, err
+	}
+
+	return &application{
+		cmd: cmd,
+	}, nil
+}
+
+type application struct {
+	cmd *cobra.Command
+}
+
+func (a *application) Start(ctx context.Context) error {
+	return a.cmd.ExecuteContext(ctx)
+}
+
+func (a *application) Shutdown() error {
+	fmt.Println("Shutdown")
+	return nil
+}