refactor: use pkg directory structure

pkg/client/secret.go

@@ -0,0 +1,25 @@
+package client
+
+import (
+	"context"
+
+	"github.com/docker/docker/api/types/swarm"
+)
+
+func StoreSecret(secretName, secretValue, server string) error {
+	cl, err := New(server)
+	if err != nil {
+		return err
+	}
+
+	ctx := context.Background()
+	ann := swarm.Annotations{Name: secretName}
+	spec := swarm.SecretSpec{Annotations: ann, Data: []byte(secretValue)}
+
+	// We don't bother with the secret IDs for now
+	if _, err := cl.SecretCreate(ctx, spec); err != nil {
+		return err
+	}
+
+	return nil
+}