Pact Foundation

Is `V3Interaction` compatible with `ApolloGraphqlInteraction`? I’m getting type errors:
```Type 'ApolloGraphQLInteraction' is not assignable to type 'V3Interaction'.
  Types of property 'uponReceiving' are incompatible.
    Type '(description: string) =&gt; ApolloGraphQLInteraction' is not assignable to type 'string'.ts(2322)```

After fiddling with it a bit more it seem that the main problem is types of query object.
I tried to manually convert `ApolloGqlInteraciton` to V3 interface but `query` there is a string while `query` in V3 is a record.
Hm…

No, we haven't added graphql to the new v3 interface just yet. See the migration notes.

Somebody asked about this in the channel yesterday. It should be a simple enough PR to support. Somebody helpfully shared some code on <http://pact.canny.io|pact.canny.io> for it you could pull in and/contribute if you're up for it

I think I already made required changes - can PR it later today

```const interaction = new ApolloGraphQLInteraction()
    .uponReceiving(interactionDescription)
    .withRequest({
      path: '/graphql',
      method: 'POST',
      headers: {
        Authorization: `Bearer ${token}`,
        'Content-Type': 'application/json',
      },
    })
    .withOperation(getOperationName(query))
    .withQuery(printQueryToString(query))
    .withVariables(variables)
    .willRespondWith({
      status: 200,
      body: {
        data: respondWith,
      },
    })
    .json();

  return {
    states,
    uponReceiving: interaction.description,
    withRequest: {
      method: interaction.request?.method,
      path: interaction.request?.path,
      query: {}, // this is not used on gql interactions
      body: interaction.request?.body,
      headers: interaction.request?.headers,
    },
    willRespondWith: {
      status: interaction.response?.status,
      body: interaction.response?.body,
      headers: interaction.response?.headers,
    },
  };```

kinda took slighly different approach - we have wrapped pack in a think layer ourselves which provides GQL wrapper. So I only need to change wrapper in one place instead of creating full blown separate class.
I think.. still testing it

Nice work.

Probably instead of doing this:

```  method: interaction.request?.method,```
You might want to confirm whether the `request` is there and throw an error if it is not - otherwise users might get surprise results if they use the DSL incorrectly.