* ci: add CI workflow and branch deletion automation

Add GitHub Actions workflows for continuous integration testing and automated deletion of merged branches. The CI workflow includes steps for Python setup, dependency installation with Poetry, running tests, and linting with Black, isort, and detect-secrets. The branch deletion workflow removes merged branches upon PR closure.

* ci: remove dev and prod CI workflows

* chore: add pre-commit configuration and update dev dependencies (#11)

Add pre-commit hooks for code quality checks including trailing whitespace,
end-of-file fixes, YAML validation, large file checks, Black formatting,
isort imports, Flake8 linting, and Pylint analysis. Update pyproject.toml
with corresponding dev dependencies for flake8, pylint, and pre-commit.

Co-authored-by: Vitório A. Cavalheiro <vitorio@dmxdesign.com.br>

* chore: add pre-commit configuration and update dev dependencies (#12)

* chore: add pre-commit configuration and update dev dependencies

Add pre-commit hooks for code quality checks including trailing whitespace,
end-of-file fixes, YAML validation, large file checks, Black formatting,
isort imports, Flake8 linting, and Pylint analysis. Update pyproject.toml
with corresponding dev dependencies for flake8, pylint, and pre-commit.

* ci: update branch deletion to use API call in delete-branch workflow

The change replaces `gh branch delete` with a direct GitHub API DELETE request for more reliable branch deletion in the CI workflow.

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Co-authored-by: Vitório A. Cavalheiro <vitorio@dmxdesign.com.br>

* refactor(generator): streamline module imports and enhance type safety (#13)

Introduce __all__ declarations in package init files to clearly define the public API for LoremIpsum, PDFGenerator, and related classes. Convert absolute imports to relative paths for better encapsulation and add type hints to method signatures in PDFGenerator for improved code clarity and maintainability.

Co-authored-by: Vitório A. Cavalheiro <vitorio@dmxdesign.com.br>

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Co-authored-by: Vitório A. Cavalheiro <vitorio@dmxdesign.com.br>