Create docs about all the step types that are in the workflow engine

[pboers1988]

Please create some documentation about what steps we support and how they can be used in the orchestrator.

[Mark90]

I believe this is more or less done here? https://workfloworchestrator.org/orchestrator-core/reference-docs/workflows/workflow-steps/?h=inputstep#step-types

Although it could use a few more examples.

[crankynetman]

Oh yeah, I think that this was done last summer and I likely forgot to close the issue :)