Move curl commands to setup scripts into a composite action

[AAraKKe]

What does this PR do?

This is a follow up from the PR #22410. As @sarah-witt pointed out we won't always runs actions from master, in fact, we should aim to have all our actions pinned from extras and marketplace.

This PR modifies the setup step to get the script to make it general, without special cases depending on the repo we are in, and ensures that the scripts needed to run test-target are taken from the same ref where the workflow is being used from through action_path.

Motivation

Simplify the test-target workflow and ensure it works seamlessly across our repos.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.75%. Comparing base (7532c0a) to head (65437c5).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[sarah-witt]

Thanks!