refactor: refactor the async task submission logic in workflow executor into task runner (inclusionAI#473)

* refactor workflow executor into task runner

* respect gemini

* fix import

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* fix

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* fix format

* fix isort

* fix isort

* fix isort

* fix isort

* fix black

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* use ruff to replace isort in ci

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* fix imports

* fix ruff isort

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* remove unused annotation imports

Author: garrett4wade