chore: add integration registry

[wconti27]

Description

This PR adds a registry for integrations, that for a start contains the name of the integration and the package dependency name. The PR also adds a whitelist for directories within ddtrace/contrib/internal that do not have an associated package, including internal python packages, the ddtrace api, and abstracted integrations like dbapi. The PR also adds a test to ensure that new integration directories cannot be added without being added to the registry or whitelist.

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:

.riot/requirements/145e80e.txt                                          @DataDog/apm-python
.riot/requirements/15eda63.txt                                          @DataDog/apm-python
.riot/requirements/18e0d52.txt                                          @DataDog/apm-python
.riot/requirements/1fc6c2b.txt                                          @DataDog/apm-python
.riot/requirements/2f38690.txt                                          @DataDog/apm-python
.riot/requirements/fb0ddd0.txt                                          @DataDog/apm-python
ddtrace/contrib/integration_registry/registry.csv                       @DataDog/apm-core-python @DataDog/apm-idm-python
ddtrace/contrib/integration_registry/whitelist.csv                      @DataDog/apm-core-python @DataDog/apm-idm-python
tests/contrib/test_registry.py                                          @DataDog/apm-core-python @DataDog/apm-idm-python
riotfile.py                                                             @DataDog/apm-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 230 ± 3 ms.

The average import time from base is: 233 ± 2 ms.

The import time difference between this PR and base is: -2.7 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.071 ms (0.90%)

ddtrace.bootstrap.sitecustomize 1.400 ms (0.61%)

ddtrace.bootstrap.preload 1.400 ms (0.61%)

ddtrace.internal.products 1.400 ms (0.61%)

ddtrace.internal.remoteconfig.client 0.663 ms (0.29%)

ddtrace 0.671 ms (0.29%)

[datadog-datadog-prod-us1]

⚪ Code Quality Violation

Suggested change

	if is_external is True: # Only check external packages
	if is_external: # Only check external packages

do not make equal with true (...read more)

Do not use variable == True, just use variable. Comparing against True makes the code more complicated to read.