refactor: use typer for CLI argument parsing

- Replaces `argparse` with `typer` for command-line argument
  parsing to improve CLI interface and maintainability.
- Converts commands to subcommands using `typer.Typer()`.
- Streamlines CLI structure and enhances user experience.

pyproject.toml

@@ -19,6 +19,7 @@ pyyaml = "^6.0.2"
 pydantic = "^2.11.3"
 rich = "^14.0.0"
 gitpython = "^3.1.44"
+typer = "^0.16.0"
 
 [tool.poetry.group.dev.dependencies]
 twine = "^6.1.0"