Function create_gateway_structure 

pub fn create_gateway_structure(project_path: &Path) -> Result<()>

Create the Gateway Architecture directory structure

Creates all necessary directories for a Gateway service:

• src/ - Source code root
• src/domain/ - Domain layer (entities, repository traits)
• src/application/ - Application layer (services, use cases)
• src/infrastructure/ - Infrastructure layer (HTTP client, cache, auth)
• src/presentation/ - Presentation layer (gRPC handlers)
• proto/ - Protocol buffer definitions
• tests/ - Integration tests

Arguments

• project_path - Root path where the project directories will be created

Errors

Returns an error if any directory creation fails