- install codemetric; apply changes for check-unnecessary-nullable ([d927cce](https://git.duniter.org/clients/gecko/-/commit/d927cce)) - codemetrics: apply check-unused-files and check-unused-code ([0728bc6](https://git.duniter.org/clients/gecko/-/commit/0728bc6)) - refactor Ud ratio compute ([bf58e8e](https://git.duniter.org/clients/gecko/-/commit/bf58e8e)) - apply const colors ([6443e04](https://git.duniter.org/clients/gecko/-/commit/6443e04))