FEAT: Workflow

[mdw771]

Features/fixes

Introduced a _BaseWorkflow class with subclasses implementing workflows that orchestrates multiple task managers. Currently available workflows are:

• MultiscanSharedObjectWorkflow
• ProgressiveResolutionWorkflow

Checklist (Don't skip!)

To check a checklist item, change the space in the backets with an x, i.e., [ ] -> [x].

Have you...

• Formatted your code properly adhering to PEP-8? Considering using RUFF to format your code automatically (https://docs.astral.sh/ruff/installation/).
• Cleaned up your code to remove large commented-out blocks?
• Properly documented any new API knobs and functions with non-trivial signatures?
• Resolved all merge conflicts with the main branch?
• Checked the diffs between your branch and the main branch to ensure that your changes are not introducing any regressions or unnecessary/irrelevant changes?
• Checked the diffs to ensure your PR only includes one feature/fix? Multiple features/fixes/changes should be split into different PRs.
• Added unit tests for new features if necessary?