Rotate Access token with refresh token (#280)

Add method for rotating access token with refresh tokens
This will be useful for catching expired sessions and
offboarding users

Also added functions to handle secrets. They have to be revisited
as some tests didn't run on CI as they waited some user input, like password

client/internal/oauth/secret_test.go

@@ -0,0 +1,27 @@
+package oauth
+
+import (
+	"github.com/stretchr/testify/require"
+	"os"
+	"testing"
+)
+
+func TestSecret(t *testing.T) {
+	// this test is not ready to run as part of our ci/cd
+	// todo fix testing
+	if os.Getenv("CI") == "true" {
+		t.Skip("skipping testing in github actions")
+	}
+
+	key := "testing"
+	value := "1234"
+	err := SetSecret(key, value)
+	require.NoError(t, err, "should set secret")
+
+	v, err := GetSecret(key)
+	require.NoError(t, err, "should retrieve secret")
+	require.Equal(t, value, v, "values should match")
+
+	err = DeleteSecret(key)
+	require.NoError(t, err, "should delete secret")
+}