Support Non-Interactive Mode for 'agenta init' Command

[aakrem]

We aim to enhance the agenta init command to support a non-interactive mode, which would allow automation and integration into various workflows without the need for user intervention. This would be particularly useful in CI/CD pipelines and scripting use cases.

Currently, the interactive setup requires user input, restricting our ability to fully automate the initialization process.

At present, executing agenta init does not provide a way to specify the organization or how to initialize the app (either as a "Blank App" or "Start from template").

We plan to add two click options and their associated logic to the agenta init command:

@click.option("--organization")
@click.option("--start-from")