feat: return invalid document in error message

[y-lakhdar]

Return the invalid document in the error message.

Before:

path/to/document.json is not a valid JSON: Document contains an invalid value for title: value is required.
Helpful links on the expected JSON format:
 • JSON file example: https://github.com/coveo/push-api-client.js/tree/main/samples/json
 • Document Body reference: https://docs.coveo.com/en/75#documentbody"

Now:

path/to/document.json is not a valid JSON: Document contains an invalid value for title: value is required.
Document in error:
{
  "DocumentId": "https://www.example.com/bar",
  "Broken_title": "Bar"
}

Helpful links on the expected JSON format:
 • JSON file example: https://github.com/coveo/push-api-client.js/tree/main/samples/json
 • Document Body reference: https://docs.coveo.com/en/75#documentbody"

[louis-bompart]

lgtm overall,
nitpik on cloning
💡 about zod maybe maybe maybe