add Spanish street suffix synonyms

[missinglink]

today I noticed that we were not able to match the query Av Michoacán against the indexed term Avenida Michoacán

this PR adds Spanish language synonyms for street suffixes. consider this a living document, please feel free to contribute/edit the file 😃

[missinglink]

rebased to fix failing tests

[orangejulius]

Definitely looks like a good thing to add overall.

I made a small note about the via,v synonym. I think single character synonyms can have surprising impact. Are we almost at the point where we want region specific synonyms? As far as I know, that synonym would not be super useful outside Spanish speaking countries, right?