Provide Model Version to ponos workflow
Depends https://gitlab.com/arkindex/ponos/-/issues/119
Depends https://gitlab.com/arkindex/backend/-/issues/1047
Once a model version is downloadable publicly, we should provide its url to a ponos workflow that needs it.
In the StartProcess flow, if a worker run has a model version specified, it should:
- provide its public url as
extra_files, using the static keymodel