[TASK] workflow update to handle multiple runs

[YohannParis]

Description

• Workflow can handle multiple runs within a drilldown.
• This update extends the WorkflowPort to keep track of multiple runs
• utility functions to change which run is visible, and how to change the state of the operator.

[mwdchang]

The util function may be better served under "services/workflow.ts", that is where the majority of workflow related functions live. This util.ts file is very much simulate/calibrate specific and should get rolled up into something else in my opinin.

[YohannParis]

The util function may be better served under "services/workflow.ts", that is where the majority of workflow related functions live. This util.ts file is very much simulate/calibrate specific and should get rolled up into something else in my opinin.

@mwdchang the function has been moved per your recommendation, which makes sense.