Add path to span name of `graphq.resolve` spans created by graphql instrumentation

[satazor]

Is your feature request related to a problem? Please describe

Currently, the graphql instrumentation packages adds spans for all resolvers where span name equals to graphql.resolve. Here's how it looks in datadog for example:

However, to have improved DX, the span name could contain the actual path.

Describe the solution you'd like to see

Something like graphl.resolve - <path> as the span name would make this much better:

• Should this be the default behavior?
• Should this be under an option?
• Should the instrumentation offer a hook for every span added, so we could change it, including changing span name or adding attributes?

Describe alternatives you've considered

The most obvious workound is to add a processor that changes the span name:

if (span.name === 'graphql.resolve' && span.attributes['graphql.field.path']) {
  span.updateName(`${span.name} ${span.attributes['graphql.field.path']}`);
}

[diogotorres97]

I did a PR to update the span name to have more information. If you can check, if this #1796 resolves the issue 😄