feat: [CFISO-2747] add types for variables in workflow defintion and workflow

[loweisz]

!! DO NOT MERGE BEFORE GA OF LOCALIZED WORKFLOWS !!

Summary

Description

Motivation and Context

Checklist (check all before merging)

• Both unit and integration tests are passing
• There are no breaking changes
• Changes are reflected in the documentation

When adding a new method:

• The new method is exported through the default and plain CMA client
• All new public types are exported from ./lib/export-types.ts
• Added a unit test for the new method
• Added an integration test for the new method
• The new method is added to the documentation