Step/Pipeline replays

[schustmi]

Describe changes

This PR adds methods to replay an existing step or pipeline run. What this means concretely:

• When replaying a step, ZenML will run the step with the same inputs and configuration of the original step run.
• When replaying a run, ZenML will run the pipeline and allows users to specify a set of steps that should be skipped and re-used from the original pipeline run.

There is also a debug mode, which means the pipeline/step will run on the active stack but switch to a local orchestrator to enable easier debugging using breakpoints and other local debugging tools.

Pre-requisites

Please ensure you have done the following:

• I have read the CONTRIBUTING.md document.
• I have added tests to cover my changes.
• I have based my new branch on develop and the open PR is targeting develop. If your branch wasn't based on develop read Contribution guide on rebasing branch to develop.
• IMPORTANT: I made sure that my changes are reflected properly in the following resources:
  • ZenML Docs
  • Dashboard: Needs to be communicated to the frontend team.
  • Templates: Might need adjustments (that are not reflected in the template tests) in case of non-breaking changes and deprecations.
  • Projects: Depending on the version dependencies, different projects might get affected.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other (add details above)