Add action APM metadata

[juliaElastic]

What is the problem this PR solves?

Help debugging agent actions.

How does this PR solve the problem?

Adding APM metadata to actions, see #1794

How to test this PR locally

Design Checklist

• I have ensured my design is stateless and will work when multiple fleet-server instances are behind a load balancer.
• I have or intend to scale test my changes, ensuring it will work reliably with 100K+ agents connected.
• I have included fail safe mechanisms to limit the load on fleet-server: rate limiting, circuit breakers, caching, load shedding, etc.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Related issues

• Reviving Josh's pr by resolving conflicts with main: Action APM tracing #1794
• Relates https://github.com/elastic/ingest-dev/issues/1489

[elasticmachine]

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Build stats

• Start Time: 2023-04-12T14:46:16.837+0000

• Duration: 17 min 8 sec

Test stats 🧪

Test	Results
Failed	0
Passed	678
Skipped	1
Total	679

💚 Flaky test report

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[mergify]

This pull request is now in conflicts. Could you fix it @juliaElastic? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b action-trace upstream/action-trace
git merge upstream/main
git push upstream action-trace

[mergify]

This pull request is now in conflicts. Could you fix it @juliaElastic? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b action-trace upstream/action-trace
git merge upstream/main
git push upstream action-trace

[juliaElastic]

Hi! Can I get a review on this?