Create class GmClosest to find closest grammatical meaning from a set

[Geo Vlasov]

It would accept a target grammatical meaning and a set of grammatical meanings, and act as the closest grammatical meaning from the set.

new GmClosest(
    ImmutableSet.of(
        new GmSimple(Sing, I),
        new GmSimple(Plur, Ger)
    ),
    new GmSimple(Sing, I, Ger) // ← Not possible in English, but possible in Inflectible model which is a superset of English
).grammemes() // ← {Sing, I}