Include query body in API deprecation logs

[paulomarg]

WHY are these changes introduced?

Related to Shopify/cli#156

Currently, we're logging deprecation notices, but for the GraphQL API, we don't get a lot of details - since every request lands in the same endpoint, there's no way to tell them apart.

WHAT is this pull request doing?

Adding the first 100 characters from the body (if one exists) to help indicate which query is triggering the logs, to make it easier for developers to figure out where they're hitting deprecated fields.

API Deprecation Notice: {
  message: 'https://shopify.dev/api/usage/versioning#deprecation-practices',
  path: 'https://shop.myshopify.com/admin/api/2022-07/graphql.json',
  body: 'query products {\\n        products(first: 2) {\\n          nodes {\\n            title\\n            bodyHt...'
}

Type of change

• Patch: Bug (non-breaking change which fixes an issue)

Checklist

• I have added a changelog entry, prefixed by the type of change noted above
• I have added/updated tests for this change