namespaced directive ISO #2266

[sniper7kills]

Helps to address #2266 in the main package without users having to create a custom field resolver.

• Added or updated tests
• [ X ] Documented user facing changes
• Updated CHANGELOG.md

Changes

Adds a @namespaced directive; allowing mutations and queries to be posted.

Allows:

type Mutation {
    createPost(input: CreatePostInput! @spread): Post! @create
    updatePost(input: UpdatePostInput! @spread): Post! @update
    deletePost(input: DeletePostInput! @spread): Post @delete
}

to become:

type Mutation {
    posts: PostMutations! @namespaced
}

type PostMutations {
    create(input: CreatePostInput! @spread): Post! @create
    update(input: UpdatePostInput! @spread): Post! @update
    delete(input: DeletePostInput! @spread): Post @delete
}

ref: https://www.apollographql.com/docs/technotes/TN0012-namespacing-by-separation-of-concern/

[spawnia]

I like the naming and docs, but I merged prematurely. I think the example will not work as is, this feature needs tests.