[ci] Split test requirements by subproject

[ScottTodd]

Important

This depends on the following PRs (included as submodule edits until reviewed/merged):

• Add requirements-test.txt to use on CI libhipcxx#29
• [tensilelite] Add requirements-test.txt to use on CI rocm-libraries#11396
• [hipthreads] Add requirements-test.txt to use on CI rocm-libraries#11438

Motivation

• Fixes [Feature]: Split test requirements by subproject to optimize component test environment setup time #7491

We've been using a common https://github.com/ROCm/TheRock/blob/main/requirements-test.txt file across all ROCm subproject tests that seemed convenient to extend at the time, but it has a few drawbacks:

• [tensilelite] Re-apply test component config and fix PyTorch SDK test failure #5529 added 50MB+ of dependencies only used for tensilelite tests but downloaded for all subprojects, sometimes contributing up to 50 minutes of job time per CI run just downloading packages on runners with slow network and no pip cache
• build: add syrupy to test requirements #6106 required sending a pull request to TheRock in order to run "TensileLite characterization (snapshot) tests", when such changes could be made purely here in rocm-libraries if we keep the responsibility for maintaining requirements lists next to the test code itself

Technical Details

Important

Now each project that installs additional requirements should provide its own requirements.txt as part of its test artifact and register that with the CI test system via the additional_requirements_files field in build_tools/github_actions/fetch_test_configurations.py.

Comparing https://github.com/ROCm/TheRock/actions/runs/33191445520 (this branch) vs a baseline https://github.com/ROCm/TheRock/actions/runs/33159247177, in aggregate across up to 50 subproject test jobs, this results in:

• Most test jobs now download ~15MB instead of 110MB of python packages --> save ~4.5GB of download bandwidth per full CI run
• Installing requirements median time dropped from 39s to 2.5s --> save ~24 runner-minutes per full CI run

Test Plan

• Tested via workflow_dispatch: https://github.com/ROCm/TheRock/actions/runs/33191445520 and checked that jobs complete successfully after installing the expected set of packages
• Note the 'quick' test levels, while projects run additional tests that other test levels that may have additional requirements

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/TheRock/blob/main/CONTRIBUTING.md.

[therock-pr-bot]

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