Rename 'smartcontract' directory to 'orchestration' #604
Description
We propose renaming the current smartcontract directory to orchestration in order to better reflect its scope and purpose.
While the directory originally contained only the smart contract code, over time it has grown to include additional components involved in orchestrating service operations, such as the SDK, CLI commands, and related modules. Renaming it to orchestration will provide a clearer structure for current and future development, as this directory is no longer limited to the smart contract itself but serves as the central point for all orchestration-related logic.
This change aims to improve maintainability and better align the repository structure with the functional boundaries of the project.