Additional validations for input parameters when generating workflows

[Lock128]

Describe the bug

Currently the validation for BuildActionParameters.actionName doesn't exist - so you are able to set actionName = "Hello cool action" which is then not supported by the Workflow engine

Expected behavior

During the process of building/creating/synthesizing the workflow there should be an error message at build time to avoid this behaviour.

Version information

• OS: [e.g. iOS]
• Node.js version: [e.g. 16.14.2]
• Package version: [e.g. 1.0.0]

Additional context

This is part of our https://github.com/taimos/projen-pipelines implementation