Checks if the GTM Engine has been updated since the user last checked, shows changelog entries for new versions, and offers to reinstall updated skills.
$npx -y skills add himanshusaleria/gtm-engine --skill whats-newInstalls into the current project.
Run `npx skills use "https://github.com/himanshusaleria/gtm-engine" --skill "himanshusaleria/gtm-engine/whats-new"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/himanshusaleria/gtm-engine" that are relevant to the current task. Run `npx skills add "https://github.com/himanshusaleria/gtm-engine"` and select the relevant skills, then follow their instructions.