message: Use strong enum for WalletCreationStatus
diff: @@ -49,7 +49,7 @@ std::vector<std::shared_ptr<CWallet>> GetWallets();
  std::shared_ptr<CWallet> GetWallet(const std::string& name);
  std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::string& warning);
  -enum WalletCreationStatus {
  +enum class WalletCreationStatus {
  SUCCESS,
  CREATION_FAILED,
  ENCRYPTION_FAILED
  