In order for sdk users to build an operation using a repo,
without importing /inernal packages, the operation
options needs to be available via a /pkg package.
* adds the onError option to operations
Adds the OnError option to operations.Options. OnError tells
corso whether to continue despite concurrent processing
errors, or to exit processing on any error. Also includes flag
support for setting the option. Only adds the options, does
not assert error handling behavior in corso.