added dummy model for piccolo orm

...late/{{cookiecutter.project_name}}/conditional_files.json

...ate/template/{{cookiecutter.project_name}}/pyproject.toml

.../{{cookiecutter.project_name}}/db_piccolo/dao/__init__.py

...{{cookiecutter.project_name}}/db_piccolo/dao/dummy_dao.py

...cookiecutter.project_name}}/db_piccolo/models/__init__.py

...kiecutter.project_name}}/db_piccolo/models/dummy_model.py