SDK Alignment of Workflow Examples

The sdks should align. Currently the java and dotnet sdk include workflow patterns in their respective example directories. See the [java sdk workflow examples patterns directory here](https://github.com/dapr/java-sdk/tree/master/examples/src/main/java/io/dapr/examples/workflows) && [see dotnets here.](https://github.com/dapr/dotnet-sdk/tree/master/examples/Workflow)

The python-sdk should include a folder per workflow pattern as well for consistency across the sdks.

docs ref: https://docs.dapr.io/developing-applications/building-blocks/workflow/workflow-patterns/