feat: add config and credential storage

internal/config/credentials.go

@@ -0,0 +1,23 @@
+package config
+
+import "github.com/zalando/go-keyring"
+
+type SecretStore interface {
+	Set(service, user, secret string) error
+	Get(service, user string) (string, error)
+	Delete(service, user string) error
+}
+
+type KeyringStore struct{}
+
+func (KeyringStore) Set(service, user, secret string) error {
+	return keyring.Set(service, user, secret)
+}
+
+func (KeyringStore) Get(service, user string) (string, error) {
+	return keyring.Get(service, user)
+}
+
+func (KeyringStore) Delete(service, user string) error {
+	return keyring.Delete(service, user)
+}