docs(readme): add local installation instructions

README.md

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+## Contributing
+
+Follow these steps to install the project locally for development:
+
+1. Install the project with the command `pip install -e ".[dev]"`.
+
+> **Note**
+We highly recommend using virtual environments for Python development. If you're using virtual environments, follow these steps instead:
+> - Create a virtual environment `python3 -m venv .venv`
+> - Activate the virtual environment `source .venv/bin/activate`
+> - Install the project with the command `pip install -e ".[dev]"`