Add system tests for capture expressions

[jpbempel]

Motivation

testing new feature Capture Expressions for method and line log probe

Changes

Workflow

1. ⚠️ Create your PR as draft ⚠️
2. Work on you PR until the CI passes
3. Mark it as ready for review
   • Test logic is modified? -> Get a review from RFC owner.
   • Framework is modified, or non obvious usage of it -> get a review from R&P team

🚀 Once your PR is reviewed and the CI green, you can merge it!

🛟 #apm-shared-testing 🛟

Reviewer checklist

• If PR title starts with [<language>], double-check that only <language> is impacted by the change
• No system-tests internal is modified. Otherwise, I have the approval from R&P team
• A docker base image is modified?
  • the relevant build-XXX-image label is present
• A scenario is added (or removed)?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

tests/debugger/probes/probe_capture_expressions_complex.json            @DataDog/debugger @DataDog/system-tests-core
tests/debugger/probes/probe_capture_expressions_line.json               @DataDog/debugger @DataDog/system-tests-core
tests/debugger/probes/probe_capture_expressions_method.json             @DataDog/debugger @DataDog/system-tests-core
tests/debugger/test_debugger_capture_expressions.py                     @DataDog/debugger @DataDog/system-tests-core