function computeModulePackageName(moduleName, packageName, old) {
  return old ? `./${moduleName}` : `@gqlapp/${decamelize(moduleName, { separator: '-' })}-${packageName}`;
}
Gets the computed package path for the module.

@param moduleName - The name of a new module
@param packageName - The application package ([client|server])
@param old - The flag that describes if the command invoked for a new structure or not
@returns {string} - Return the computed path