Added nightly/manual CI jobs for dd-trace-go macrobenchmarks

[igoragoli]

What does this PR do?

This PR sets up nightly/manual CI jobs for running dd-trace-go macrobenchmarks, in order to migrate the Go Macrobenchmark from the KTG/Reliability Environment (see datadog-reliability-env/apps/go/prof-app) to the Benchmarking Platform.

• The benchmarks are described and explained in DataDog/benchmarking-platform@igoragoli/migrate_go_macrobenchmark_from_ktg PR.
• All 12 scenarios are scheduled to run in parallel across different GitLab runners on a nightly basis, and they take 20 minutes to run.

Motivation

Related issue

Describe how to test/QA your changes

The adequate execution of the added CI jobs can be verified in the following pipeline:
#17672789

Reviewer's Checklist

• Changed code has unit tests for its functionality.
• If this interacts with the agent in a new way, a system test has been added.

[pr-commenter]

Benchmarks

Benchmark execution time: 2023-07-26 08:32:03

Comparing candidate commit 6f279d1 in PR branch igoragoli/add_go_macrobenchmark with baseline commit eaa593d in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 27 metrics, 0 unstable metrics.