Move NewClient and AppContext to commands pkg

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

cmd/ctr/events.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 
 	eventsapi "github.com/containerd/containerd/api/services/events/v1"
+	"github.com/containerd/containerd/cmd/ctr/commands"
 	"github.com/containerd/typeurl"
 	"github.com/urfave/cli"
 )
@@ -13,7 +14,7 @@ var eventsCommand = cli.Command{
 	Name:  "events",
 	Usage: "display containerd events",
 	Action: func(context *cli.Context) error {
-		client, ctx, cancel, err := newClient(context)
+		client, ctx, cancel, err := commands.NewClient(context)
 		if err != nil {
 			return err
 		}