Use mworks parsing that includes filename for non-normalizers

[h-mayorquin]

This PR changes the mworks parsing so the filename is available for normal (non-normalizer) sessions.

Hey @yoonbai I noticed that the parsing of mworks that adds the filename is missing from non-normalizer stimulus (which is using mwk_rsvp_new) for some reason.

Was this intentional?

[yoonbai]

Previously, there were two files, mwk_rsvp and mwk_rsvp_new, that were essentially the same expect for dealing with additional fields such as the stimulus hash. I aggregated them into one file, mwk_rsvp, to prevent confusion. When comparing the two files, I didn't see differences in the resulting filename (or maybe you were referring to the filename as something else?). In summary, moving forward, we should only have one file, mwk_rsvp (not mwk_rsvp_new), for parsing RSVP tasks

[h-mayorquin]

Closing this in favor of #50