Add CRT-PMT flash classification to TPC-PMT flash-matching producer

[rtriozzi]

This PR (based off of v10_04_04) adds the flash classification from the CRT-PMT matching information to the best-matched flash in the TPC-PMT barycenter flash-matching producer.

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Associated PRs

• Add CRT-PMT flash classification to TPC-PMT flash-matching producer sbnanaobj#179
• Add CRT-PMT flash classification to TPC-PMT flash-matching producer sbnobj#157
• Add CRT-PMT flash classification to TPC-PMT flash-matching producer icaruscode#875

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Review

Tagging for review @francescopoppi and @PetrilloAtWork as the CRT & light gurus. Thanks!

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Checklist

• Have you added a label? (bug/enhancement/physics etc.)
• Have you assigned at least 1 reviewer?
• [] Is this PR related to an open issue / project?
• Does this PR affect CAF data format? If so, please assign a CAF maintainer as additional reviewer.
• Does this PR require merging another PR in a different repository (such as sbnanobj/sbnobj etc.)? If so, please link it in the description.
• [] Are you submitting this PR on behalf of someone else who made the code changes? If so, please mention them in the description.

[PetrilloAtWork]

Approved (although if one of my suggestions in another PR is received, an explicit conversion to int will be needed here).

[kjplows]

Just bumping this -- @francescopoppi does this look good to you? Thanks!