chore: introduce APM_TRACING RC product

[P403n1x87]

We introduce the APM_TRACING remote configuration product that allows dispatching remote configuration to the library for remote enablement/ configuration of library components and features.

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/internal/remoteconfig/products/__init__.py                      @DataDog/remote-config @DataDog/apm-core-python
ddtrace/internal/remoteconfig/products/apm_tracing.py                   @DataDog/remote-config @DataDog/apm-core-python
ddtrace/settings/remoteconfig.py                                        @DataDog/apm-core-python
ddtrace/debugging/_debugger.py                                          @DataDog/debugger-python
ddtrace/debugging/_products/dynamic_instrumentation.py                  @DataDog/debugger-python
pyproject.toml                                                          @DataDog/python-guild
ddtrace/internal/remoteconfig/products/client.py                        @DataDog/remote-config @DataDog/apm-core-python

[datadog-dd-trace-py-rkomorn]

Datadog Report

Branch report: chore/apm-tracing-rc
Commit report: 13eabbc
Test service: dd-trace-py

✅ 0 Failed, 130 Passed, 1468 Skipped, 5m 1.69s Total duration (35m 34.51s time saved)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-01-16 12:14:05

Comparing candidate commit 13eabbc in PR branch chore/apm-tracing-rc with baseline commit 4183671 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 394 metrics, 2 unstable metrics.