What is the underlying problem you're trying to solve?

A counter metric in the http.send builtin. Helps keep track of all http.send calls made in a query's evaluation code path. Useful with larger policy code bases.

Describe the ideal solution

A simple counter similar inter query cache hit metric for total number of http.send calls.

Describe a "Good Enough" solution

Same as ideal solution.

Additional Context

Continued discussion from #6730