Add logging of the long GraphQL queries for future debug

[xgreenx]

We need to add detailed logging into the resolver for long GraphQL queries for future debugging.

[Agilulfe]

I can happily give it a go.

[xgreenx]

You can try to finish it, but we plan to start work on it the next week, so you need to hurry=)

[Agilulfe]

You can go for it then. I thought it was stale and wanted to casually get my hands dirty.

[xgreenx]

Done with https://github.com/FuelLabs/fuel-core/pull/1250