Add new correctedopflash info to SR object

[asanchezcastillo]

Quick checklist

• Have you run git fetch and pulled the latest changes from the branch you're basing your PR against?
• If you're adding new classes, have you added them to classes_def.xml in the relevant directory?
• Have you added a checksum in classes_def.xml to any and all new classes you're implementing, and rebuilt?
• If you're updating classes, have you incremented the ClassVersion by one compared to develop in classes_def.xml?

Description

Please provide a short description of your PR.
This PR modifies the SRCorrectedOpFlashTiming object to include the photon time of flight and particle propagation time used during the correction of the op flash timing. These attributes are required for downstream correction. More information can be found here.

This PR should be merged with
SBNSoftware/sbndcode#946
SBNSoftware/sbnobj#175
SBNSoftware/sbncode#666

[PetrilloAtWork]

Approved.

[PetrilloAtWork]

Note that having setDefaults() set the same values as the construction values defeats the original purpose, which was to distinguish values that have been "forgotten" (default-constructed) from values deliberately set to a default value (setDefaults()).

However, this is not a problem introduced by this PR.