feat(config): migrate supported_configurations.json file to v2 format

[genesor]

What does this PR do?

WIP

Motivation

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.
• New code is free of linting errors. You can check this by running ./scripts/lint.sh locally.
• 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.

Unsure? Have a question? Request a review!

[datadog-datadog-prod-us1]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: b84054d | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[codecov]

Codecov Report

❌ Patch coverage is 92.85714% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 55.09%. Comparing base (86c9a30) to head (b84054d).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/env/supported_configurations.go	92.85%	0 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
internal/env/supported_configurations.go	69.04% <92.85%> (+7.28%)	⬆️

... and 9 files with indirect coverage changes

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[pr-commenter]

Benchmarks

Benchmark execution time: 2026-01-27 11:08:49

Comparing candidate commit b84054d in PR branch ben.db/config-inversion-v2-format with baseline commit 86c9a30 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 158 metrics, 6 unstable metrics.