Add Custom Form Support as already used in [Imixs-Forms](https://github.com/imixs/imixs-forms) and the [Imixs-Office-Workflow](https://github.com/imixs/imixs-office-workflow/) project. As a result we can add the imixs custom form conept into the imixs-workflow project
Add Custom Form Support as already used in Imixs-Forms and the Imixs-Office-Workflow project.
As a result we can add the imixs custom form conept into the imixs-workflow project