Update for Sandbox (Adding Genesis for Distribution)

[c-yuwei]

This PR introduces braph2genesis_lite, a function for generating a lite version of BRAPH-2 that includes only the elements an user specifies. The resulting output is a standalone, GUI-ready, and fully unit-tested piece of software that’s easy to distribute/develop—all while ensuring it retains the essential BRAPH-2 functionality an end user needs.

This PR illustrates the usage of braph2genesis_lite through three progressively more complex examples:

Hello-World

• Demonstrates a simple pipeline where the user enters string A (e.g., “Hello”) and string B (e.g., “World”), and the software combines them into a single string (“Hello World!”).

• Showcases the minimal overhead needed to create a fully compiled, self-contained application with a basic GUI and tests.

Selected Ready-Pipelines

• Produces a focused BRAPH-2 distribution containing only a subset of existing pipelines from the repository, plus the classes they require.
• Highlights how you can trim the codebase to exactly what’s needed, reducing size and complexity while keeping a fully functional tool.

User-Customized Pipelines

• Incorporates entirely new or user-defined elements and pipelines, showing how developers can extend BRAPH-2 to suit their own requirements without pulling in every module of the main framework.
• Emphasizes the flexibility of the genesis mechanism to adapt and compile new functionality on-the-fly.

Through these examples, this PR demonstrates how genesis enables users to create and distribute targeted BRAPH-2 builds—maintaining professional code standards, complete documentation, and robust testing while avoiding the overhead of the entire repository.