Description

Resolves #4290

Development notes

• Refactored and merged logic of the various _run method implementations into the abstract _run method.
• Added abstract _get_executor method, implemented by each runner.
• Refactored logic to determine number of workers from ParallelRunner and ThreadRunner into shared validate_max_workers method.
• Changed hook_manager argument in runners to allow it to be None, which is needed for the ParallelRunner, because hook manager can't be serialised.
• Updated TestSuggestResumeScenario for SequentialRunner, because it's now using a ThreadPoolExecutor, the suggestions can vary per run. I've manually created a project with the same pipelines and verified that the suggestions (even if they vary) do always work.
• Added TestSuggestResumeScenario tests for ThreadRunner.

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Checklist

• Read the contributing guidelines
• Signed off each commit with a Developer Certificate of Origin (DCO)
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change in the RELEASE.md file
• Added tests to cover my changes
• Checked if this change will affect Kedro-Viz, and if so, communicated that with the Viz team