(feat) internal/civisibility/native: test optimization native exports and api

[tonyredondo]

What does this PR do?

This PR introduces the exports required for a libtestoptimization native library based on Go and the build scripts for different platforms.

The repository: https://github.com/datadog/test-optimization-native uses these export to create the native library

Note: Everything is behind the civisibility_native build tag, so it doesn't effect the normal tracer build.

V1: (feat) internal/civisibility/native: test optimization native exports and api V2

Motivation

We have customers asking for native api to use it in a rust sdk and a swift for windows sdk.

I created a preview version of rust sdk crate: https://crates.io/crates/test-optimization-sdk
The sdk is being used by: https://github.com/DataDog/dd-rust-testrunner

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.
• For internal contributors, a matching PR should be created to the v2-dev branch and reviewed by @DataDog/apm-go.

Unsure? Have a question? Request a review!

[datadog-datadog-prod-us1]

Datadog Report

Branch report: tony/civisibility-native-api
Commit report: 6aaa8fd
Test service: dd-trace-go

✅ 0 Failed, 5475 Passed, 72 Skipped, 10m 22.12s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-03-22 12:04:25

Comparing candidate commit 9f534f3 in PR branch tony/civisibility-native-api with baseline commit a95495a in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 60 metrics, 2 unstable metrics.

[tonyredondo]

it will be implemented in https://github.com/DataDog/test-optimization-native