Research about Ğ1 monetary license integration and refactor of its handling in Silkaj

Issues

• With pipenv, if running silkaj from and other folder than the project root, the relative path does not work.
• For Debian packaging, a patch was needed to include those files.

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Integration in external package

Packaging from the repository

Self-packaging refused by the community

• documents/licence-g1#1

DuniterPy integration

• duniterpy#159

Packaging repository

• tools/g1-monetary-license-packager#3

Debian package

• Create a Debian package

Silkaj integration

• Pull in the git subtree to update to the latest changes
• Rename license-G1 subtree folder to g1_monetary_license
• #392 (closed): Include g1_monetary_license folder to the package: pyproject.toml
• Implement code in Silkaj
  • Add helper to get the path of the licenses
  • Add Spanish, Esperanto, and Portuguese languages choices
• Write documentation in CONTRIBUTING.md on how to manage the subtree:
  • Warn to not modify the monetary license here but on its repository
  • Procedure on how to pull changes from g1_monetary_license repository (remote, subtree)