Updated all instances of "GuillaumeHemmen" to "guillaumehemmen" in workflow files to ensure uniformity in repository URLs. This change prevents potential issues caused by case sensitivity in certain environments.
Introduce four workflows to automate Docker builds and pushes using Kaniko. These workflows cover push events to the `master` branch, pull requests, tag pushes, and other branches. They streamline image publishing to the specified registry with proper secrets configuration.
