Field alias support

[lorefnon]

This extends the API to support field aliasing, which is quite necessary when same field has to be fetched multiple times with different args/selections.

Usage:

const selection = query(t => [
    t.images({ count: 10 }, t => [
        t.title(),
        t.url()
    ]).as("recentPhotos"),
    t.images({ count: 10, author: "lorefnon" }, t => [
        t.title(),
        t.url()
    ]).as("ownPhotos")
]).toQuery({ queryName: "fetchPhotos" })

query fetchPhotos {
    recentPhotos: images(count: 10) {
        title
        url
    }
    ownPhotos: images(count: 10, author: "lorefnon") {
        title
        url
    }
}

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[timkendall]

This is awesome, been meaning to get around to this! Please add new type-level test suite for this functionality in field-alias.test-d.ts (or similar) and we can get this merged. Appreciate the work.

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Name	Status	Preview	Updated
tql	✅ Ready (Inspect)	Visit Preview	Apr 29, 2022 at 6:00AM (UTC)

[lorefnon]

@timkendall Thanks. I have added the type test.

[timkendall]

Published as @timkendall/tql@1.0.0-rc.8, @timkendall/tql@beta, @timkendall/tql-gen@1.0.0-rc.8, @timkendall/tql-gen@latest