feat(integration-tests): Add fixtures and tests for starting and stopping CLP packages.

[quinntaylormitchell]

Description

This PR builds on the infrastructure introduced in PR #1100 and PR #1549 by introducing a parametrized test called test_clp_package that ensures two key configurations of the clp package (clp-text and clp-json) spin up and tear down successfully. test_clp_package uses the contents of a dictionary called CLP_MODE_CONFIGS to spin up each mode in its proper configuration.

Dependent PRs

This is a foundational infra PR, and so there are other PRs which depend on this one. They are listed below:

• feat(integration-tests): Record required components in PackageConfig based on the CLP package config. #1658
• feat(integration-tests): Validate that the components of the CLP package are running (fixes #1644). #1659
• feat(integration-tests): Validate generated package service configuration integrity. #1660
• feat(integration-tests): Add port range assignment based on a configurable base port to avoid package spin-up failures. #1662
• feat(ci): Add task for package integration tests. #1664

Compression PRs

• feat(integration-tests): Test compression with the CLP package. #1651

Checklist

• The PR satisfies the contribution guidelines.
• This is a breaking change and that has been indicated in the PR title, OR this isn't a
  breaking change.
• Necessary docs have been updated, OR no docs need to be updated.

Validation performed

Ran the following command from clp/integration-tests:

uv run pytest -m 'package'

Both the clp-json and clp-text tests passed.

Summary by CodeRabbit

• Tests

  • Added integration tests to validate package startup across multiple modes, parameterized via fixtures.
  • New fixtures manage package configuration, lifecycle and cleanup; setup/teardown starts/stops the package and removes temporary config files.
  • Added mode utilities and helpers; improved command execution logging, timeout handling and file-existence validation.

• Chores

  • Pytest configured to report all outcomes and a new "package" test marker added.
  • Added YAML-related dev dependencies for test config handling.

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