Request: Add SACM ID (Mexico) to Work attribute list

[Moebeus]

Search is capthca but direct links to works are available at http://sacm.org.mx/informa/fichaobra.php?numreg=[SACM ID]

[reosarevok]

Can you add a STYLE ticket for me?

[Moebeus]

Done! Tell me if I did it wrong:
https://tickets.metabrainz.org/browse/STYLE-902