```python
# Import required libraries
import os
from typing import Dict

class PragmaticProgrammerAGIAgent:

    def __init__(self, project_structure: Dict = None):
        # Define the project structure configuration
        self.project_structure = project_structure if project_structure else {
            "src": ["__init__.py"],
            "tests": ["__init__.py"],
            ".github": {"workflows": ["test.yaml"]},
            "domain": ["__init__.py"],
            "infrastructure": {"docker-compose.yaml": []},
            "requirements.txt": [],
        }

    def generate_project_structure(self, structure_dict: Dict = None, base_path: str = ''):
        """
        Generates the project structure.
        Parameters:
            structure_dict (dict): a dictionary representing the project structure
            base_path (str): the base directory to create the directory structure
        """
        if structure_dict is None:
            structure_dict = self.project_structure

        for element, childrens in structure_dict.items():
            element_path = os.path.join(base_path, element)
            if isinstance(childrens, dict):
                os.makedirs(element_path, exist_ok=True)
                self.generate_project_structure(childrens, element_path)
            elif isinstance(childrens, list):
                os.makedirs(element_path, exist_ok=True)
                for child in childrens:
                    self.create_file(os.path.join(element_path, child))
            else:
                self.create_file(element_path)

    def create_file(self, file_path: str):
        """
        Creates a file.
        """
        with open(file_path, 'w') as f:
            pass

# Create a instance of PragmaticProgrammerAGIAgent
agent = PragmaticProgrammerAGIAgent()

# Generate the project structure
agent.generate_project_structure()
```