Add job types for local OD access

[nattgris]

I needed to configure some PDOs dynamically based on application state. This was the only way I could do it, because the PDO configuration objects are otherwise only accessible via the bus. The same mechanism may be useful for other things.

It could also be useful to access large objects synchronized with the c-open thread, but for that the API functions should probably take void* and size instead. Something to consider.

[nattgris]

It could perhaps be useful to let the object access function know whether the access is local or remote, so they can e.g. skip validation for local writes (such as for the PDO configuration objects). Object initialization from defaults and store should also be local then.