add synonyms to equate numeric ordinals with alphabetic ordinals

[blackmad]

I noticed that

the query 5 5th St, Medford, MA 02155, USA fails on geocode.earth https://pelias.github.io/compare/#/v1/search?sources=oa%2Cosm&text=5+5th+St%2C+Medford%2C+MA+02155%2C+USA&debug=0

but it succeeds if I spell out "fifth" - https://pelias.github.io/compare/#/v1/search?sources=oa%2Cosm&text=5+fifth+St%2C+Medford%2C+MA+02155%2C+USA&debug=0

the street in OSM is "fifth st"

this fails in the other direction too - "111 8th ave nyc" succeeds, "111 eighth ave" fails, in OSM its "8th ave"

I was directed by @orangejulius to post this issue in /schema