IPLD Ints are int64, Graphql is int32, any numbers above 2^31 fail to serialize

[hannahhoward]

So yay for graphql's spec being extra annoying but:
https://spec.graphql.org/June2018/#sec-Int
specifies integers as having only 32 bit range. (cause something something javascript)

Golangs Graphql deals with this by silently converting these values to nil:
https://github.com/graphql-go/graphql/blob/1a9db8859ef57c2821bbd47b0db9a1a09e617f41/scalars.go#L61

And if the feels aren't optional, they get a NonNull modifier:

go-ipld-graphql/gen/tmpl/struct.tmpl

Line 9 in 00e0c87

Type: graphql.NewNonNull({{ .Type | LocalName }}),

Which then conveniently produces a serialization error.

Easy way to check with the dealbot: Run this query -- https://lb.mainnet-us-east-1.filops.net/mainnet-dealbot-graphql/graphql?query=query%20{%20Tasks%20{All%20{%20StorageTask%20{%20Size%20}%20}}%20} -- all I'm doing is asking for the StorageTasks.Size value

I have no idea what the proper solution is -- make them floats? Custom Scalar? I think at least float will work.