[FEATURE] [jai-workflow-core] Support Modules

[czelabueno]

Feature Title

Implement Module packaging

Description

A Module is a collection of nodes grouped together to perform a higher-level function. Modules can be reused across different workflows, providing modularity and reusability.
The Modules should define an EntryPoint as Node and should implement a native protocol to be plugged or unplugged of new or existing workflows.

Modules must be packaged as Java module or Java library to be imported into other projects and run in the same JVM.

Modules cannot run on their own without a parent workflow.

Motivation

Sometimes, you will find that you are regularly adding exactly the same set of nodes to every workflow, or you want to group a lot of nodes into a single, logical unit. This is what Modules are for.

We can combine all of the parallel task-* nodes into a single Module, so that the resulting Workflow resembles the following:

Alternatives

No response

Additional Context

No response