Ad-sdl.wei

Fixes an issue where the pypi version of the package was missing submodules.

Adds support for the Module About specification.

- Adds optional support for Diaspora
- Includes ongoing efforts to fully dockerize WEI and better support workcell portability and robustness.

Major overhaul of the internal architecture of WEI, taking better advantage of our Pydantic Dataclasses and removing a fair bit of legacy code.

Other improvements and changes include:
- Codified `StepResponse` and `StepFileResponse` models, which are now a standardized response from modules
- Switch to WEI Engine
- Moved `exp_app.Experiment` -> `experiment_client.ExperimentClient` (wei.Experiment is still aliased, in addition to wei.ExperimentClient)
- Standardized around "Workflow Runs" nomenclature, removing references to "jobs"