OmniErrors - Simple Error Handling

• No stack traces
• No multierrors
  • Provides simple implementation of Join which does not actually combine errors but returns first non-nil one
• List of functions:
  • New(msg string) error
  • Errorf(format string, args ...any) error
  • Wrap(err error, message string) error
  • Wrapf(err error, format string, args ...any)
  • Join(errs ...error) error
  • Is(err, target error) bool
  • As(err, target error) bool